Sealock manufactures the 40L waterproof motorcycle tail bag for wholesale and OEM buyers worldwide, and 40 liters is the size that turns a bike into a tourer: enough for multi-day luggage on the pillion seat or rack without the width of hard panniers. On a motorcycle a bag is not just storage — it rides in the weather at speed, takes constant vibration, and gets strapped and unstrapped every stop. This is what 40L carries and why it suits touring.
1. Company Overview
Sealock (YiFuLong Outdoor Gear Co., Ltd.) has designed and produced welded waterproof bags for over 20 years, operating two facilities in Dongguan, China and Ho Chi Minh City, Vietnam, and produces for international outdoor and marine brands including OSPREY, Helly Hansen, West Marine, and CHUMS. Production is held to international compliance and social-audit standards.
- Established: 2003 (20+ years in waterproof bag manufacturing)
- Facilities: Dongguan, China | Ho Chi Minh City, Vietnam
- Certifications: ISO9001, BSCI, SMETA, HIGG, GRS, SCAN, CSR
- Services: OEM / ODM, custom logo, color, and capacity
2. What 40 Liters Carries on Tour
Forty liters is calibrated for multi-day touring luggage that mounts on the pillion seat or rear rack:
- Clothing: several days of layers plus a spare set, kept dry through a day's ride in the rain
- Riding kit: a packable rain suit, spare gloves, a base layer, and a warm mid-layer for altitude or evening
- Camp or overnight gear: a compact sleep layer or a night's kit for motorcycle camping
- Tools and essentials: a tool roll, tire kit, documents, and a charger set, kept sealed from road spray
The 40L tail bag also expands for extra capacity when the load grows, and carries off the bike by a top handle and shoulder strap, so it moves from the rack to a hotel room or campsite in one lift.
3. Why a Tail Bag Suits Touring
A tail bag sits in a specific sweet spot among motorcycle luggage:
- Universal mounting: straps to the pillion seat or rack on almost any bike, with no frames or bike-specific hardware to fit
- Central, low weight: the load sits close to the bike's centerline, so it affects handling less than wide panniers
- Aerodynamic profile: a soft, tapering body cuts less into airflow than a boxy top case
- Quick on and off: the whole bag lifts off at a stop and carries by hand or shoulder, unlike fixed luggage
- Night visibility: reflective detailing keeps the rear of the load visible after dark
4. What Touring Actually Does to a Bag
A motorcycle bag lives in harsher conditions than most luggage, and each stress maps to a build decision:
- Rain and road spray at speed: water is driven at the bag under pressure, so a stitched-and-taped seam leaks — high-frequency welded seams remove that path entirely.
- Constant vibration: hours of engine and road buzz work at every strap anchor and D-ring, the first points to fail, which is why they are reinforced and load-tested over 1,500 cycles.
- Strap tension and re-mounting: the bag is cinched down hard and re-strapped every stop, stressing the mounting points and the fabric under the straps.
- UV and heat: a bag exposed to full sun all day, sometimes near a hot exhaust or engine, ages faster — a UV-stable shell resists the fading and stiffening that follows.
- Compression in transport: luggage stacked or strapped over the bag puts sustained load on seams and any valve, which the welded construction is built to take.
- Abrasion on and off the bike: setting the bag down on tarmac, gravel, and thresholds scuffs the base, so a durable shell and reinforced bottom matter.
5. How the Sealock 40L Tail Bag Is Built for It
Each of those maps to a build feature:
- High-frequency welded, waterproof body — one continuous skin with no needle holes, sealed against rain driven at speed
- Reinforced carry handle and strap anchors — load-tested to hold under vibration and repeated re-strapping
- Roll-top or zipper closure — seals the main compartment and expands for extra volume when needed
- Reflective strips — rear visibility after dark
- Universal mounting straps plus handle and shoulder strap — fits most bikes and carries off the bike in one lift
6. Sealock Motorcycle Bag Range
The range below leads with the 40L tail bag and covers related Sealock motorcycle luggage for more or less capacity, with verified specifications and product pages.
| Image | Model / Series | Capacity | Material | Mounting | Best for | Product Page |
|---|---|---|---|---|---|---|
|
Motorcycle Waterproof Tail Bag 40L (Black) | 40L (expandable) | HF-welded, reflective | Pillion seat / rear rack | Multi-day touring | View |
|
50L Roll-Top Motorcycle Luggage Bag (SL-C619) | 35L / 50L | 500D PVC tarpaulin | Rear rack, roll-top, IPX6 | Larger touring loads | View |
|
80L Motorcycle Saddlebags (detachable) | 80L (40L × 2) | HF-welded | Both sides, detachable | Long touring, split load | View |
|
Motorcycle Saddle Bag 40L (one side) | 40L | HF-welded | Single side + handle | Commuting, single-side carry | View |
7. Quality Control
Sealock applies a three-stage control to every batch before shipment. The laboratory test suite covers a load test of over 1,500 cycles — directly relevant to a bag that rides under constant vibration and strap tension — along with tensile strength, bonding strength, salt spray, friction resistance, color fastness, and color difference, plus a full water immersion test to confirm the welded body and closure keep the interior dry under rain driven at speed. Inspection runs in three stages: IQC checks incoming fabric and hardware, IPQC samples welds and strap anchors in line, and OQC performs AQL sampling, batch immersion testing, and signed gold-sample comparison, with optional SGS/QIMA third-party inspection on request.
8. OEM / ODM Customization and Cooperation
Sealock supports full customization for brand and distributor orders, from logo and color through to ground-up development of an original tail bag against a buyer's sketch or sample. Standard terms:
- MOQ: 300 pcs per model
- Customization: capacity, mounting system, reflective placement, fabric and denier (TPU / PVC), color (standard high-visibility red, green, orange, plus black), and logo
- Sampling: 7–15 working days
- Bulk lead time: 30–45 days, confirmed at quotation by quantity
- Trade terms: FOB Guangdong; other terms negotiable
Workflow: (1) inquiry and specification confirmation; (2) quotation and trade terms; (3) sampling and approval; (4) bulk production under the three-stage QC; (5) final inspection and shipment. See the OEM / ODM services page.
9. FAQ
Q: Is a 40L motorcycle tail bag enough for touring?
A: Yes. 40L carries several days of clothing, riding kit, tools, and a compact overnight layer, and it expands when the load grows — enough for most multi-day tours without hard panniers.
Q: Will it fit my bike?
A: In most cases, yes. A tail bag mounts to the pillion seat or rear rack with universal straps and needs no bike-specific frames, so it fits the majority of motorcycles.
Q: Is it fully waterproof against rain at highway speed?
A: Yes. High-frequency welded seams and a sealed closure hold against rain driven under pressure, verified by full water immersion testing on each batch.
Q: What is the minimum order quantity and lead time?
A: MOQ is 300 pcs per model, samples in 7–15 days, and bulk production in 30–45 days depending on quantity and customization.
Request a Quotation
For specifications, samples, or pricing on the 40L tail bag or any model in the range, submit an inquiry. Sealock responds to procurement enquiries within 24 hours.
