Mountain Bike Backpack-Product Description
A Mountain Bike Backpack from FMOSBAG is a 3-in-1 convertible storage bag made in Fujian, China, switching between a rear rack pannier, a backpack and a handbag for daily commuting and long-distance touring. It is built from high-density 600D PVC coated polyester with a roll-top buckle closure for reliable water repellency, protecting belongings from rain and road mud splashes on every ride.
Organized Storage, Padded Carry & Anti-Theft Safety
Furthermore, this Mountain Bike Backpack keeps gear organized with a dedicated 16-inch laptop compartment, a 1.5L water bottle side mesh pocket, dual front pockets and a hidden side pocket; the padded back panel supports comfortable carrying, large reflective strips boost night visibility, and an anti-theft combination lock is included for extra security.

Hidden Mounting Hardware & Bulk OEM Customization
In addition, this Waterproof Bicycle Backpack hides its quick-release mounting hardware inside an inner compartment when off the bike, and the adjustable base fits 80–180mm rack widths with 8–12mm and 13–16mm tube adapters; full OEM & ODM customization on pattern, packaging and structure is available for global bicycle gear wholesalers.
Mountain Bike Backpack-Product Specifications
| Basic Information | |
|---|---|
| Brand | FMOSBAG |
| SKU | FMO-BG-JT039 |
| Original Model No. | JTMTB-039 |
| Origin | Fujian, China |
| Product Name | 3-in-1 Waterproof Mountain Bike Backpack, 24L |
| Sales Unit | Sold per piece |
| Target User | Unisex |
| Closure Type | Roll-top buckle seal |
| Application Scenarios | Bike commuting, long-distance touring, outdoor day trips, daily travel |
| Capacity, Dimensions & Weight | |
| Standard Capacity | 24L |
| Max Expandable Capacity | 27L (adjustable range 20–35L) |
| Product Size | 30×20×45cm |
| Net Weight | 1.0kg |
| Single Package Size | 55×45×10cm |
| Material, Structure & Accessories | |
| Main Fabric | 600D high-density PVC coated polyester, tear and scratch resistant |
| Lining Material | Polyester |
| Internal Layout | Dual front pockets, 1.5L water bottle side mesh pocket, 16-inch laptop compartment, hidden side pocket, built-in zipper pouch |
| Mounting System | Adjustable quick-release base (80–180mm mounting width), 8–12mm / 13–16mm tube adapters, 3-point fixing structure |
| Carry Accessories | Removable shoulder strap, soft top carry handle |
| Ergonomic Design | Padded back panel for comfortable long-time carrying |
| Safety Feature | Large front reflective strip for enhanced night visibility |
| Bonus Accessory | Anti-theft combination lock included |
| Performance & Compatibility | |
| Water Resistance Level | IPX6 roll-top structure, resists heavy rain and mud splash; not designed for full submersion |
| Compatible Bicycle Models | Road bikes, mountain bikes, city commuter bikes and touring bikes with a standard rear rack |
| Core Functions | 3-in-1 convertible design, expandable capacity, anti-theft lock, night reflective safety, laptop compatible |
| Custom Options | Custom logo, bag color, pattern printing, reflective strip design, custom retail color box and outer packaging |
| Factory Certification & Quality Control | |
| Factory Background | Established in 2014, approx. 12 years bag manufacturing experience in Fujian, China; full OEM & ODM production |
| Factory Qualifications | ISO9001, BSCI; REACH compliant, documents available upon request |
| QC Standard | 100% pre-shipment inspection including IPX6 waterproof and roll-top seal test, PVC coating check, stitch and bar-tack tensile test, quick-release base and buckle durability test, tube adapter fit check, combination lock function test, padded panel and dimension verification |
| Material Compliance | Eco-friendly non-toxic material, REACH compliant, meets EU daily commodity standards; test reports and compliance documents provided to bulk buyers |
| Packing, Shipping & After-sales Terms | |
| Single Packaging | Individual PE bag per piece; custom retail color box optional |
| Export Carton Packing | Standard export corrugated carton, customizable per order quantity |
| Shipping Methods | Sea freight, air freight, DDP and UPS/TNT/DHL/FedEx express; full export documents (invoice, packing list, BL, COO) |
| Payment Terms | T/T, 30% deposit, balance before shipment |
| Warranty & Return | 12-month factory warranty; 7-day return or exchange for workmanship defects |
| Lead Time | Pre-production samples 7–10 working days; mass production 20–25 working days after sample confirmation |
| B2B Advantage | Established in 2014 with 12 years experience, dedicated account manager, flexible negotiable MOQ for custom orders, small-batch trial orders on stock, full export documentation support, every batch waterproof, tensile and hardware tested with certificates and test reports sent to bulk buyers |
B2B Wholesale & Product FAQ
Q1: What factory certifications and quality support do you provide for bicycle bags?
A: FMOSBAG is a professional bicycle gear manufacturer based in Fujian, China. We hold ISO9001 quality system certification and BSCI factory audit qualification. All products go through 100% pre-shipment inspection including fabric waterproof, stitch tensile and hardware durability tests, and we provide full qualification documents for wholesale and brand clients.
Q2: What is the OEM customization process and production lead time?
A: We support full customization including pattern printing, packaging design and structural adjustment. Design drafts are sent within 2 working days after demand confirmation, pre-production samples take 7–10 working days, and mass production finishes within 20–25 working days after sample approval, with a dedicated manager tracking the whole process.
Q3: What is your minimum order quantity? Do you support trial orders?
A: The MOQ for fully customized orders with exclusive logo and packaging is negotiable based on order details. For standard stock products without customization, small-batch trial orders are acceptable, helping new cross-border sellers test market demand with low upfront cost.
Q4: Is this Mountain Bike Backpack fully waterproof for daily commuting?
A: Yes. This bag uses 600D PVC coated polyester and a roll-top sealed structure for reliable water repellency, resisting heavy rain and road mud splashes and keeping items dry during daily commuting and medium-distance touring; it is not designed for full submersion in water.
Q5: How does this Waterproof Bicycle Backpack switch between a pannier and a backpack?
A: Converting the bag takes only seconds. As a pannier, attach the adjustable quick-release base to your rear rack and lock it with the 3-point fixing system; as a backpack, hide the mounting hardware in the inner compartment and buckle on the removable shoulder strap. It can also be carried by the top handle as a handbag.
Q6: Will this convertible bag fit most standard bicycle rear racks?
A: Yes. The adjustable quick-release base supports an 80–180mm mounting width and comes with 8–12mm and 13–16mm tube adapters, fitting most standard rear racks on road bikes, mountain bikes, city commuter bikes and touring bikes, and stays stable even on bumpy roads.












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