Vacuum Compression Packing Bag with One-Way Air Valve (3 Sizes)

Sealock manufactures the Vacuum Compression Packing Bag with One-Way Air Valve (3 Sizes) for travellers who run out of suitcase before they run out of clothes. As a welded bag factory, we build the body from TPU laminated fabric with high-frequency welded seams and close it with a waterproof zipper — then add a one-way air valve on the front, so you seal the bag, press down, and the trapped air escapes without coming back in. Bulky jackets, jumpers and bedding compress down to a fraction of their loose volume, and the sealed shell keeps splash, dust and damp off what is inside.

At a Glance

• One-way air valve — press the air out by hand, no pump or vacuum needed.
• Waterproof zipper — sealed closure with a moulded pull, keeps out splash and dust.
• Welded seamless body — no stitch holes, so it holds the compression.
• Three sizes — 38 × 27 × 14, 46.5 × 31.5 × 14 and 53.5 × 38.5 × 16 cm.
• Ultralight — around 0.15 kg, so it costs you almost nothing to carry.

One-Way Air Valve — No Pump Required

The moulded valve on the front is the heart of the bag. Close the zipper, lay the bag flat and press or roll it: air escapes through the valve, and the one-way design stops it flowing back in, so the bag stays compressed. There is no pump to pack, no power needed and nothing to break in a suitcase — which is exactly why it works for travel rather than just for storage at home.

Waterproof Zipper and Welded Body

A waterproof zipper with a sealing strip and a moulded pull runs the length of the opening, and the body is high-frequency welded into a seamless shell with no needle holes. That construction does two jobs: it holds the compression instead of leaking air back through seams, and it keeps splash, dust and damp off clean clothes in a wet hotel bathroom, a beach house or a boat cabin. It is a splash-resistant travel organizer rather than a submersible dry bag — for immersion protection, see our welded roll-top and airtight-zipper dry bags.

Three Sizes for a Whole Trip

Size	Dimensions (L × W × H)	Typical Contents
Small	38 × 27 × 14 cm	Underwear, t-shirts, socks, a light layer
Medium	46.5 × 31.5 × 14 cm	Jumpers, trousers, a few days of clothing
Large	53.5 × 38.5 × 16 cm	Jackets, bedding, bulky winter layers

Sold individually or as a nested three-piece set, the sizes stack neatly in a suitcase and let travellers sort clean, worn and bulky items into separate bags instead of one compressed lump.

Light Enough to Be Worth Packing

At around 0.15 kg the bag adds almost nothing to your allowance — the space it saves is a net gain rather than a trade-off against weight. A webbing loop at the side makes it easy to pull the bag out of a packed case, and the matte black finish keeps it looking clean next to premium luggage.

1. Engineering Specifications

Item	Specification
Brand	SEALOCK
Model No.	SL-P1082
Product Name	Vacuum Compression Packing Bag
Product Category	Travel Organizer / Compression Packing Bag
Construction Type	Welded Compression Bag with One-Way Valve
Manufacturing Process	High-Frequency Welded Seams
Closure	Waterproof Zipper with Sealing Strip & Moulded Pull
Air Release	Moulded One-Way Air Valve (no pump required)
Water Resistance	Splash-, dust- and damp-resistant (not submersible)
Size — Small	38 × 27 × 14 cm
Size — Medium	46.5 × 31.5 × 14 cm
Size — Large	53.5 × 38.5 × 16 cm
Net Weight	approx. 0.15 kg
Attachment	Side Webbing Pull Loop
Colour	Matte Black (custom colours available)
Country of Origin	Guangdong, China

2. Material Specifications

Component	Material	Purpose
Body	TPU Laminated Fabric, matte finish	Flexible, airtight-capable, wipe-clean shell
Seams	High-Frequency Welded	Needle-hole-free joints that hold compression
Zipper	Waterproof Zipper with Sealing Strip	Seals the opening against splash and dust
Zipper Pull	Moulded Pull	Easy grip when the bag is packed tight
Air Valve	Moulded One-Way Valve	Releases air and stops it flowing back in
Pull Loop	Nylon Webbing	Pulling the bag out of a packed case

3. Functional Specifications

Feature	Description
Space Compression	Press the air out to shrink bulky clothing and bedding to a fraction of its loose volume.
No Pump Needed	One-way valve works by hand pressure — nothing extra to pack or power.
Sealed Closure	Waterproof zipper keeps splash, dust and damp off clean clothes.
Wet / Dry Separation	Pack worn or damp clothing separately from the rest of the case.
Three Sizes	Sort clothing by type and stack the bags neatly in a suitcase.
Compression Retention	Welded seamless body does not leak air back through stitching.
Ultralight	Around 0.15 kg, so the space saved is a net gain.
Reusable	Open, refill and re-compress as often as needed.
Easy Maintenance	Wipe-clean surface, packs flat when empty.

4. Customization / OEM Specifications

Option	Available
Colour	Matte black stock · custom Pantone
Material	TPU (standard) · alternative laminate to spec
Sizes	Small / medium / large · custom dimensions
Set Configuration	Single · 2-piece · 3-piece nested set
Valve Type	One-way hand-press (standard) · pump-compatible option
Zipper Type	Waterproof (standard) · airtight upgrade to spec
Transparent Window	Optional (see contents without opening)
Pull Loop / Handle	Configurable
Logo Methods	Silk-screen · Heat-transfer · Welded patch · Embossed
Private Label & Packaging	Header card · retail box · instruction card
Full Custom Development	Ground-up development from sketch, sample or target spec
MOQ	300 pcs
Sample Lead Time	7–15 days
Production Lead Time	30–45 days
Factory Audit	Available
OEM / ODM	Supported

Our OEM/ODM capability goes well beyond colour and logo changes: bring a sketch, a sample or a target spec — sizes, set configuration, valve type, zipper grade, window and retail packaging — and our China base develops it from the ground up into a finished original product. Compression sets are a strong private-label line for luggage and travel-accessory brands; share your size plan and launch date and we will schedule sampling.

5. Packaging Specifications

Item	Details
Individual Packaging	Poly Bag / Header Card
Set Packaging	3-piece set in retail box (OEM)
Carton Type	5-Layer Export Carton
OEM Carton Printing	Available
Barcode Label	Available
Instruction Card	Available (OEM)
Shipping Mark	Available
Pallet Packing	Optional

Recommended Use

Scenario	Suitability
Suitcase / Carry-On Packing	✔
Backpacking / Long Travel	✔
Wardrobe & Seasonal Storage	✔
Bedding & Bulky Winter Layers	✔
Worn / Damp Clothing Separation	✔
Camping & Van Life Organization	✔
Submersion / Water Sports	✘ — splash-resistant only; choose a roll-top or airtight-zipper dry bag

Quality Inspection Standards

Inspection Item	Standard
Fabric Inspection	100%
Weld Seam Inspection	100%
Zipper Function & Seal Check	100%
Air Valve One-Way Function Test	100%
Compression Retention Test	Batch sampling
Splash / Spray Test	Batch sampling
Zipper Fatigue Test	Random sampling
Colour Consistency	100% vs. signed sample
Appearance Inspection	100%
Carton Inspection	100%

Inspection runs IQC on incoming laminate, zippers and valves, IPQC on welds, valve bonding and zipper installation in process, and OQC before shipment with an AQL check, a compression-retention check and a signed golden-sample comparison. Third-party inspection (SGS / QIMA) is available on request.

Product Highlights

Feature	Advantage
One-Way Air Valve	Compress by hand — no pump, no power, nothing to break
Welded Seamless Body	Holds compression instead of leaking air through seams
Waterproof Zipper	Splash, dust and damp stay off clean clothes
Three Nesting Sizes	Sort a whole trip and stack it neatly in a case
0.15 kg Ultralight	Space saved without spending baggage allowance
Reusable & Packs Flat	Works trip after trip, stores flat when empty

Printing & Logo Options

Brand it your way: silk-screen, heat-transfer, welded patch and embossed logos, in matte black or a custom Pantone colour, with header cards, retail boxes and instruction cards for private-label sets.

OEM / ODM and Wholesale

As the factory, we supply the SL-P1082 for OEM, ODM and wholesale buyers from an MOQ of 300 pcs, FOB Guangdong, with samples in 7–15 days and production in 30–45 days. We customize sizes, set configuration, colour, material, valve and zipper grade, transparent window options, retail packaging and your logo, and we offer full ground-up custom development. For a custom or wholesale compression packing set under your own brand, send your spec and target quantity and we will quote against it.

Need a submersible bag instead? See our 20L waterproof travel duffel. For a larger trip, see our 55L waterproof duffel bag.

FAQ

Will it actually stay compressed, or does it puff back up after a few hours?

This is the single most common complaint about cheap compression bags, and it is almost never the valve that fails — it is the closure. A zip-seal strip that is not pressed shut along its full length leaves a hairline channel, and the bag quietly re-inflates overnight. SL-P1082 uses a welded body with no stitch holes and a waterproof zipper with a sealing strip and moulded pull, so once the slider is run fully home there is no air path back in. If a bag ever stops holding overnight, the seal has been compromised — usually by grit in the track.

Do I need a pump or a vacuum cleaner?

No. Close the zipper, lay the bag flat and press or kneel on it — the one-way valve exhales and closes behind the air. That is the whole point of the design: hotel rooms rarely have a vacuum cleaner, and an electric pump is one more thing to charge and lose. A pump-compatible valve is available on OEM orders if your end use calls for maximum compression.

How much space will I really save?

It depends entirely on what you pack. Bulky knits, fleece, down and bedding are mostly trapped air and collapse dramatically — roughly half volume or better. Dense woven items such as jeans have very little air in them to begin with and will barely change. Buyers who expect every item to halve are usually the ones packing denim; buyers who load sweaters and jackets are the ones who write the enthusiastic reviews.

Is it waterproof? Can I put it underwater?

It is splash-, dust- and damp-resistant. The welded shell and sealed zipper will protect clothes in a wet hotel bathroom, a beach house, a boat cabin or a suitcase with a leaking bottle inside. It is not a submersible dry bag — the valve is a mechanical opening in the front panel, and we do not rate any valved compression bag for immersion. For genuine underwater protection, choose one of our roll-top or airtight-zipper dry bags.

My last set fell apart after one trip. How long does this one last?

Thin polyethylene space-saver bags are effectively disposable — they split at the corners and the zip strip loses its grip within a few cycles. SL-P1082 is built on TPU laminated fabric with high-frequency welded seams, which is the same construction we use for waterproof luggage rather than for storage bags. It is designed to be opened, refilled and re-compressed for the life of the suitcase it lives in.

Will my clothes come out creased?

Compression creases fabric — every compression system does, and anyone claiming otherwise is selling something. Roll rather than fold before loading, keep shirts and anything you would rather not iron in a separate uncompressed bag, and hang garments on arrival. Knitwear, activewear and bedding come out fine; tailored cotton will need a steam.

Does it help with airline weight limits?

No, and it is worth being clear about that. Compression removes air, not mass — a compressed bag weighs exactly what its contents weigh. What it buys you is volume, which is what lets people fit a longer trip into a carry-on or avoid a second checked bag. The bag itself adds roughly 0.15 kg, so the space is close to free in weight terms.

Can I store a down jacket or sleeping bag in it?

For travel, yes — loft recovers after a few hours of hanging. For months of wardrobe storage, no. Down and synthetic insulation lose loft permanently if held compressed long-term, which is a manufacturer recommendation for the garment, not a limitation of this bag. Store insulation loose and use the bag for the journey.

Which size should I order, and are they bigger than they look?

Dimensions are the uncompressed flat size, which catches people out: the large at 53.5 × 38.5 × 16 cm fills a checked case on its own. Small (38 × 27 × 14 cm) suits underwear, t-shirts and light layers; medium (46.5 × 31.5 × 14 cm) suits jumpers, trousers and a few days of clothing; large suits jackets and bedding. Most buyers stock all three as a nested set so travellers can sort by category rather than compress everything into one brick.

Can I use it for dirty or damp laundry on the way home?

Yes, and it is one of the most common real-world uses. The sealed shell contains odour and moisture, so worn kit, wet swimwear and towels travel without contaminating clean clothes. Empty and air the bag with the zipper open when you get home, and rinse the valve with fresh water if it has seen salt water.

How do I stop it failing early?

Two habits cover almost every reported failure. Keep the zipper track clean — sand and grit are what destroy the seal, and a wipe with a damp cloth before closing prevents it. And do not overstuff: forcing the zipper closed over a bulging load puts lateral stress on the slider, which is the mechanism behind most bags that stop holding compression. Store the bag empty, dry and uncompressed with the valve cap loose.

Request a Quote

Sealock (YiFuLong Outdoor Gear Co., Ltd.) has built welded waterproof and travel gear in Guangdong since 2003. To order the SL-P1082 or start an OEM/ODM program, send us your sizes, set configuration, colour, logo and target quantity for pricing and lead time. MOQ 300 pcs · samples 7–15 days · production 30–45 days.

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