8L Waterproof Sling Bag — RF Welded, YKK, IPX6 | MOQ 300

Sealock manufactures and supplies the SL-E1314 8L Welded Waterproof Sling Bag for fishing, watersports, cycling and urban-carry brands, and for corporate and outfitting programs. The body measures 37.5 cm tall and tapers from 25 cm to 15 cm across and from 12.5 cm to 10 cm deep, holds 8 L and weighs 0.65 kg. The shell is TPU-coated fabric with a visible cross-hatch base weave, joined by high-frequency welding — shell panels, base, D-rings, tool-dock patches, strap anchors and handle anchors are all fused rather than stitched. The main compartment opens on a curved YKK waterproof zipper running down the front-side face. A second YKK waterproof zipper is set into the shoulder strap itself, serving a flat pocket for a phone, licence, cards or leader spools. Inside the main compartment, a mesh divider is fitted to the back wall, separating flat items from the open volume and keeping small gear visible rather than buried at the base of a tapered body. Protection is rated IPX6 — heavy rain, spray and directed water jets from any angle. The shell and all welded seams are watertight, but the closures are waterproof zippers rather than airtight zippers, so the bag is not a sealed vessel and is not rated or intended for submersion or for use where it may go overboard and stay in the water. Programs that need immersion protection at this size should specify an airtight-zipper sling instead.

At a Glance

• Tapered single-shoulder body — 37.5 cm tall, narrowing from 25 cm to 15 cm across and from 12.5 cm to 10 cm deep, so the bag sits against the back when worn and swings around the body without catching.
• Two YKK waterproof zippers — a curved main zipper on the body and a second one serving a pocket built into the shoulder strap, reachable without taking the bag off.
• Welded TPU shell, IPX6 — every structural seam, D-ring and tool-dock patch is high-frequency welded; rated against heavy rain, spray and directed water jets.
• UTX hardware throughout — side-release buckles and adjusters on the shoulder strap, stabiliser strap and front lash straps.
• 0.65 kg for 8 L — light enough to wear on one shoulder for a full day on the water or on the bank.

Main Zipper and Strap Pocket

The main closure is a YKK waterproof zipper with a laminated tape and a moulded pull, curved along the front-side face so the compartment opens toward the wearer when the bag is swung round to the chest. The tape is welded to the shell rather than stitched through it, so the closure line carries no needle holes, and the zipper terminations sit inside welded end pockets that take tension off the last teeth.

The second zipper is built into the shoulder strap. Its pocket takes a phone, a fishing licence, cards, keys or a spool of leader, and sits at chest height with the bag still on the back — the items a user reaches for most often do not require unslinging the bag. It uses the same YKK waterproof zipper as the main opening rather than a lighter component, because a strap pocket is the most rain-exposed part of a sling.

Interior Layout

A mesh divider is fitted along the interior back wall, creating a flat slot in front of the padded back panel. Flat items — a wallet, a tool wrap, a folded rain shell, a tablet in a small case — sit in the slot instead of sinking into the main volume, and the mesh keeps them visible when the bag is opened. On a tapered 8 L body, where the base is narrower than the opening, anything loose ends up wedged at the bottom; the divider is what keeps the bag workable.

The rest of the volume is left open. Custom internal configurations — fixed dividers, a padded camera or tackle insert, a key tether, additional mesh pockets — are straightforward on this platform for programs that need them.

External Attachment and Side Pockets

Two horizontal lash straps cross the front panel, each running through a welded D-ring and closed with a UTX side-release buckle. They compress a light load against the body and hold a rain shell, a net, a folded tripod or a tool roll on the outside of the bag, where wet and dirty gear belongs. A stretch mesh pocket on one side panel takes a bottle or a spare spool.

Moulded tool-dock patches are welded to both side panels — the anchor points for a forceps or plier sheath, a retractor, a light or a carabiner. Every one of these fittings is welded to the shell. Adding a bar-tacked webbing anchor to a welded waterproof body would introduce a needle perforation for the sake of a feature, which is exactly the compromise this construction exists to avoid.

Carry System

The single shoulder strap is padded, faced in mesh on the contact side and contoured to run diagonally across the torso. It adjusts on webbing through a UTX ladder lock and releases through a UTX side-release buckle at the lower anchor, so the bag can be dropped off the shoulder without pulling it over the head. A stabiliser strap crosses under the opposite arm and clips with a second UTX buckle, holding the bag against the back when the wearer is casting, paddling or riding rather than letting it swing forward.

The back panel is padded and mesh-faced. On a welded shell that cannot breathe, a mesh face at the contact area is the only practical heat management, and on a single-shoulder bag it matters more than on a backpack because the whole load bears on one side. A webbing grab handle at the top takes the bag on and off a boat seat, a rack or a hook.

Engineering Specifications

Brand	Sealock Outdoor Gear
Model	SL-E1314
Category	Welded waterproof sling bag
Construction	High-frequency welded shell, welded D-rings, tool docks, strap and handle anchors; no stitched structural seams
Waterproof structure	Welded TPU-coated shell with YKK waterproof zippers on both openings
Closure	Curved YKK waterproof main zipper; YKK waterproof zipper on the strap pocket
Protection level	IPX6 — heavy rain, spray and directed water jets; not rated or intended for immersion
Dimensions	37.5 cm high; 25 cm tapering to 15 cm across; 12.5 cm tapering to 10 cm deep
Capacity	8 L
Weight	0.65 kg
Hardware	UTX side-release buckles and adjusters throughout
Carry system	Padded mesh-faced single shoulder strap with stabiliser strap; padded mesh back panel; top grab handle
Stock colours	Mint green, khaki; custom Pantone available
Branding	High-build silicone screen print as supplied
Country of origin	Guangdong, China (secondary facility: Ho Chi Minh City, Vietnam)

Material Specifications

Component	Material	Purpose
Main shell	TPU-coated polyester, cross-hatch base weave	Weldable waterproof body with abrasion resistance and shape retention on a tapered pattern
Base panel	Reinforced TPU laminate	Takes the wear from being set down on a boat deck, gravel or a wet bank
Main and strap zippers	YKK waterproof zipper, laminated tape, welded end pockets	Weather seal at both openings with tension taken off the last teeth
Interior divider	Polyester mesh on a welded carrier	Holds flat items against the back wall and keeps small gear visible
Back panel and strap	Moulded EVA with mesh facing	Load spreading and heat management where the whole load bears on one shoulder
Buckles and adjusters	UTX side-release buckles and ladder locks	Tool-free release and adjustment; corrosion-free in salt water
D-rings and tool docks	Welded TPU patches with moulded fittings	External attachment without perforating the waterproof shell
Side pocket	Stretch polyester mesh	Holds a bottle or spare spool and collapses flat when empty

Functional Specifications

Feature	Description
Main compartment	Curved YKK waterproof zipper, opens toward the wearer when the bag is swung to the chest
Strap pocket	YKK waterproof zipper pocket built into the shoulder strap, reachable without unslinging
Interior divider	Mesh slot on the back wall for flat items
Front lash straps	Twin straps on welded D-rings with UTX buckles; compression and external carry
Side pocket	Stretch mesh pocket for a bottle or spool
Tool docks	Welded moulded patches on both side panels for forceps, retractors, lights or carabiners
Carry	Padded single shoulder strap with UTX release and stabiliser strap; top grab handle
Back ventilation	Mesh-faced padded back panel
Weather performance	IPX6 — heavy rain, spray and directed jets
Care	Rinse with fresh water after salt or sand exposure; wipe clean; air dry with the zipper open

Customization / OEM Specifications

Item	Options
Colour	Mint green and khaki in stock; Pantone-matched shells, contrast base panel, matte or gloss finish
Size and capacity	Scaled patterns from roughly 5 L to 15 L on the same welded sling platform
Material	TPU-coated polyester, heavier TPU, PVC tarpaulin or recycled TPU
Waterproof level	Upgrade to an airtight-zipper construction where the program needs immersion protection
Interior	Fixed dividers, padded tackle or camera insert, key tether, additional mesh pockets
Carry	Left- or right-shoulder orientation, removable strap, waist-pack conversion, dual-strap version
External features	Additional D-rings and tool docks, rod or net holder, reflective trim, MOLLE panel
Hardware	Custom-moulded UTX buckles, branded zipper pulls, colour-matched webbing
Branding	High-build silicone screen print, silicone heat transfer, welded TPU patch, shell embossing, reflective print

Sealock has run OEM and ODM programs for outdoor, fishing and watersports brands for over 20 years, and the most demanding requirements on this platform can be met. Development does not have to begin from an existing model: our engineering team regularly builds products from scratch off a customer's sketch, a physical sample, or nothing more than a target specification sheet, taking the project through structural design, pattern development, welding-parameter validation, carry-system fit testing and pilot production. Both our high-frequency welding capability and our in-house sewn production line are professional operations in their own right, so hybrid constructions — a welded waterproof body with a sewn strap or organiser — are fully supported. Ground-up custom development carries a longer lead time than a modification of an existing platform, and we will state that timeline at the quotation stage rather than after tooling has started.

Packaging Specifications

Individual packing	Recyclable PE polybag with moisture-warning print; strap tucked, handle tied
Retail option	Hang tag, IPX rating and zipper-care label, printed insert card or full-colour box
Carton	Standard 5-ply export carton, 30 pcs per carton (subject to final configuration)
Carton printing	Customer artwork, one or two colours, or plain kraft
Barcode	EAN / UPC applied to polybag, hang tag or box as instructed
Hang tag	Customer-supplied artwork, string or plastic fastener
Shipping marks	Customer format printed or labelled on two carton faces
Palletisation	Standard export pallet, stretch-wrapped, corner-protected, on request

Recommended Use

Scenario	Suitable
Bank, wading and small-boat fishing	✔
Kayak and SUP deck carry in spray	✔
Cycling and e-bike everyday carry	✔
Commuting and city travel in rain	✔
Day hiking and trail walking	✔
Compact camera and drone accessory carry	✔
Festival, beach and poolside use	✔
Submersion, diving, or dropping the bag in water	✘
Whitewater or surf where capsize is expected	✘
Loads above 5 kg carried for long periods	✘
Laptop transport	✘

The immersion exclusion is structural: both closures are waterproof zippers rather than airtight zippers, which keeps them easy to operate one-handed with the bag still slung but means the body is not a sealed vessel. The load ceiling is a carry-system limit — the whole weight bears on one shoulder, and above roughly 5 kg a two-strap pack is the right product. The tapered 8 L body will not take a laptop; programs needing that should look at a backpack platform.

Quality Inspection Standards

Test	Standard
Heavy rain and water-jet test	IPX6 conditions — directed jets from all angles, no ingress at seams, zippers, D-rings or tool docks
Weld seam peel and shear	Destructive sampling against internal welded-seam strength standards
Load test	1,500+ cycles at rated load, no weld separation or hardware fracture
Zipper fatigue test	3,000 cycles on both YKK waterproof zippers, seal and operation retained
Strap anchor pull-off	Shoulder strap, stabiliser strap, D-ring and handle anchors tested to internal force limits
Buckle strength	UTX buckles cycled and load-tested to internal limits
Tensile and bonding strength	Shell fabric and welded joints tested against internal standards
Abrasion resistance	Martindale cycling on shell, base panel and strap facing
Print adhesion	Silicone print cross-hatch and rub testing after wet and dry cycling
Salt spray test	Sliders, buckles and tool-dock fittings, corrosion and function retention
Colour fastness and colour difference	Rubbing and light fastness; ΔE checked against approved lab dip for each colour

Quality control runs across three gates. IQC screens incoming TPU-coated fabric, YKK zipper tape, UTX hardware, foam, mesh and webbing against approved samples, with lot-level checks on coating thickness and colour difference — mint green in particular shows dye-lot drift readily, and catching it here is cheaper than catching it at final inspection. IPQC monitors welding temperature, pressure and dwell time at every station in real time and pulls destructive seam samples at set intervals; a drifting weld parameter is the most common cause of a bag that passes visual inspection and leaks in the field. OQC performs the full functional and weather check on every carton lot.

The correct incoming-inspection procedure at the buyer's end is a heavy rain or water-jet exposure under IPX6 conditions with absorbent paper placed inside the main compartment and the strap pocket, plus dimensional, zipper-operation, buckle-function, weld-seam visual and colour-difference checks. Do not run an immersion test — SL-E1314 is not specified to pass one, and immersing it will produce a failure against a criterion the product was never sold on. We will document our full OQC procedure on request. Third-party inspection by SGS, QIMA or a buyer-nominated agency can be arranged at any stage of production.

Product Highlights

Feature	Advantage
Strap-mounted YKK zip pocket	Phone, licence and cards reachable at chest height without unslinging the bag
Curved main zipper	The compartment opens toward the wearer when the bag is swung round to the chest
Fully welded shell and fittings	No needle perforation and no proud thread — removes the leak path and the first abrasion point together
Mesh back-wall divider	Flat items stay visible instead of wedging into the narrow base of a tapered body
Welded tool docks on both sides	Forceps, retractor, light or carabiner mount on either side without a stitch hole in the shell
UTX hardware and stabiliser strap	The bag stays put while casting, paddling or riding instead of swinging forward
0.65 kg at 8 L	Light enough for a full day on one shoulder

Printing & Logo Options

The logo as supplied is a high-build silicone screen print — silicone ink cures at a temperature the TPU coating tolerates, sits slightly proud of the surface with a tactile finish, and holds its edge through abrasion and repeated wetting where standard surface print does not. It is the default recommendation on this shell and is verified at OQC by cross-hatch and rub testing after wet and dry cycling. Silicone heat transfer gives a similar raised finish with finer detail resolution at a higher unit cost. A welded TPU patch produces a tonal, dimensional mark applied in the same process as the rest of the bag, with a visible patch outline. The shell can also be embossed during welding, and reflective print is available for cycling and night-use programs. Logo customisation is available from the 300-piece MOQ, and zipper pulls, webbing, UTX buckles and mesh trim can all be colour-matched.

OEM / ODM and Wholesale

SL-E1314 is available as a stock platform for wholesale and as a development base for OEM and ODM programs. Minimum order quantity is 300 pieces per colour for the standard configuration, with FOB terms from Guangdong. Sample lead time is 7–15 days for a stock unit with applied branding, and longer where new patterns, custom hardware tooling or a different shell material are required. Sealock has built waterproof and welded gear for over 20 years, operates facilities in Dongguan, China and Ho Chi Minh City, Vietnam, and produces for fishing and outdoor brands including SIMMS, ORVIS, PENN, AFTCO and OSPREY. The same specification can be produced from either origin, which matters to buyers managing tariff exposure.

Related Products

Buyers building a sling and fishing-pack line usually compare this model with the SL-E548 8 L airtight-zipper fishing sling bag and the SL-E868A 12 L compact airtight-zipper sling, both of which use an airtight zipper where a program needs immersion protection rather than IPX6. For small items that must stay dry in any condition, see the SL-A064 IPX8 phone pouch with camera window and the multi-purpose waterproof pouch. Programs adding a full backpack should look at the SL-E641 25 L minimalist airtight-zipper backpack.

FAQ

What is the waterproof rating, and can it be submerged?

SL-E1314 is rated IPX6 — it resists heavy rain, spray and directed water jets from any angle. It cannot be submerged. The shell and all welded seams are watertight, but both closures are YKK waterproof zippers rather than airtight zippers, which keeps them easy to operate one-handed with the bag still slung and also means the body is not a sealed vessel. For wading, capsize or drop-in-water scenarios, our airtight-zipper sling models are the correct choice.

Can the strap pocket be reached without taking the bag off?

Yes — that is what it is for. The pocket sits at chest height on the shoulder strap and opens on its own YKK waterproof zipper, so a phone, licence, cards or a spool of leader come out without unslinging. It uses the same waterproof zipper as the main compartment rather than a lighter component, because a strap pocket is the most rain-exposed part of a sling.

What is the mesh divider inside for?

It creates a flat slot against the back wall for a wallet, a tool wrap, a folded rain shell or a small tablet case. On a tapered 8 L body the base is narrower than the opening, so anything loose works its way down and wedges at the bottom; the divider holds flat items upright and visible when the bag is opened.

What can the tool docks on the sides hold?

Forceps or plier sheaths, a retractor, a light, a carabiner or a small accessory pouch — mounted on either side depending on which shoulder the user carries on. The patches are welded TPU bonded directly to the shell and tested to internal pull-off limits, welded specifically so that adding external mounting does not put a needle hole in a waterproof body.

Will the bag swing forward when I cast or ride?

The stabiliser strap is there to stop it. It crosses under the opposite arm and clips with a UTX buckle, holding the body against the back. Released, the bag swings freely around to the chest for access — which is the point of a sling — and the curved main zipper opens toward the wearer in that position.

Can we have it in our own colours, and can you put our logo on it?

Yes to both, from the 300-piece MOQ per colour. Mint green and khaki are stock; Pantone-matched shells, contrast base panels and matte or gloss finishes are available on top. Logo options are high-build silicone screen print, silicone heat transfer, welded TPU patch, shell embossing and reflective print, with zipper pulls, webbing, UTX buckles and mesh trim colour-matched.

How much can it carry comfortably?

Up to about 5 kg for extended wear. All the weight bears on one shoulder, so beyond that a two-strap backpack is the right product regardless of how well the strap is padded. The 8 L volume and the tapered pattern are sized for a day's fishing kit, a camera and a lens, or a commuter's essentials rather than a full daypack load.

Is it available for left-handed or right-shoulder carry?

The stock configuration is one orientation. A mirrored pattern is a straightforward modification for OEM programs, and some buyers run both orientations as a paired SKU. A removable strap, a waist-pack conversion and a dual-strap version are also available on this platform.

How should we inspect it on arrival?

Run a heavy rain or water-jet exposure under IPX6 conditions with absorbent paper inside the main compartment and the strap pocket, plus dimensional, zipper-operation, buckle-function, weld-seam visual and colour-difference checks. Do not immerse it — the bag is not specified to pass an immersion test, and doing so produces a failure against a criterion it was never sold on. We will document our full OQC procedure on request.

What is the minimum order quantity and lead time?

MOQ is 300 pieces per colour for the standard configuration, FOB Guangdong. Samples ship in 7–15 days for stock units with applied branding; new patterns, custom hardware tooling or a different shell material extend that. Bulk production lead time depends on order size and season and is confirmed at order placement. The same specification can be produced from either our China or our Vietnam facility. Third-party inspection by SGS, QIMA or a buyer-nominated agency can be scheduled at any production stage.

Request a Quote

YiFuLong Outdoor Gear Co., Ltd. (Sealock)
Email: info@sealock.com.hk
Tel / WhatsApp / WeChat: +86-13632981825

Send us your target colour, capacity, carry orientation, branding method and annual volume, and we will come back with a quotation, a lead time and a sample plan for the SL-E1314 welded waterproof sling bag.