Your Trusted Custom Bike Bags Manufacturer

Bike bags are the least forgiving category in the soft-goods catalogue. A frame bag has to fit a tube triangle measured in millimetres, carry load against constant vibration, and keep contents dry in spray thrown up by the front wheel. There is no tolerance for pattern drift and no room for a lining that shifts.

Specification options for custom bike bags

The grid below covers the four formats our production team produces most: frame bags, handlebar rolls, saddle bags and panniers. Note that a frame bag is always patterned to a specific frame size, so the dimensions are a fit range rather than a fixed catalogue size.

Welded construction is the default for frame and handlebar formats because a needle hole in a TPU laminate is a leak path. Where a seam has to be sewn for strength, it is sewn first and then taped, never the reverse. Documented compliance lines for these builds cover REACH (EC 1907/2006) and California Proposition 65 as standard, with OEKO-TEX Standard 100 added for programmes selling into European specialty retail.

Water column rating is the number most often quoted and least often understood. A 10,000 mm face fabric means nothing if the closure leaks; on a roll-top, the closure outperforms the fabric, and on a zip it is the weakest point in the system. Match the closure to the rating rather than the other way round.

How a bike bag is built

Frame bag patterning starts with a template. The frame triangle is measured for top tube, down tube and seat tube, a cardboard template is cut and test-fitted, and only then is a pattern drafted. Any programme with more than one frame size needs a separate pattern per size, and that is why frame bag tooling and sampling cost more than the bag suggests.

Panels are cut on a die or laser depending on volume. Laser cutting seals the edge of a TPU-laminated fabric and removes a finishing step; die cutting is faster at volume and is used once the pattern is frozen. Cut panels are checked against the template before welding, because a 2 mm error at the tube interface becomes visible once the bag is fitted.

RF welding uses a shaped electrode and a set of dwell, pressure and power parameters per fabric. Those parameters are recorded per programme and re-verified at the start of each production run, because a laminate batch with slightly different melt behaviour will produce a weld that looks correct and fails at the peel test.

Reinforcement at the attachment points is the highest-stress area. Hook-and-loop straps pull against the seam, so the strap base is welded or stitched to a Hypalon patch that spreads load across the panel rather than concentrating it at a line. On panniers, the rail plate is bolted through a laminated backing plate, not through face fabric.

Internal structure is minimal by design. A frame bag gets a removable stiffener in the main panel so it does not sag when loaded; a pannier gets a moulded back plate. Everything else is cut to avoid bulk, because a bag that rubs against a rider's leg or a crank generates returns faster than one that leaks.

Cost drivers and MOQ for bike bags

The dominant cost on frame bags is pattern and template development, which is a fixed cost per frame size rather than per unit. A programme covering three frame sizes carries three times the development cost and does not amortise it until volume is high. Buyers frequently budget for one size and discover the fit range requires three.

Material is the second driver, and TPU-laminated fabric is roughly double the cost of a PU-coated equivalent at the same denier. Welding time is the third: a welded bag cycles slowly compared with a sewn one, and each weld is a discrete machine operation with its own setup.

Programmes start at 500 units per style and colour, with reorders from 300 units once the pattern exists. Sampling is 6–10 working days against a supplied template, or 12–15 where the template has to be developed from frame drawings. Sample fees run USD 50–150, credited on your first bulk order, and weld tooling is USD 300–2,500.

Standard terms are T/T 30/70 against FOB Xiamen, with EXW, CIF and DDP available under Incoterms 2020. Quotes come back in 24–48 hours once frame drawings or a template are supplied. Transit is 25–35 days by sea, 5–8 days by air, 3–5 days by courier.

Quality gates and acceptance criteria

Every run is inspected to AQL 2.5 — Critical 0, Major 2.5, Minor 4.0 — sampled under ISO 2859-1, with AQL 1.5 on request. The product-specific tests focus on water ingress and seam integrity, because those are the two failures a rider notices immediately.

Hydrostatic resistance is measured to AATCC 127 and spray resistance to AATCC 22, with a full rain shower test to AATCC 35 on finished bags. Coating adhesion is checked to ASTM D751, seam strength to ISO 13934-1, and weld peel strength is measured on a tensile tester at the start and end of every run to catch parameter drift.

Attachment systems and frame fit

Attachment is what makes or breaks a bike bag programme, and it is the part most often specified last. Hook-and-loop straps are light and adjustable but lose grip when packed with grit, so Hypalon-faced straps with a moulded tip are worth the premium on anything that sees gravel or winter roads.

Rail-mounted formats need a bracket matched to rail diameter. Standard rails are 7 mm, but oversize and carbon rails exist, and a bracket cut for one will not seat on another. We ask for the rail specification before quoting, and we supply a shim kit where a programme spans more than one bike platform.

Clearance is the last check. A handlebar roll has to clear cable routing and brake levers when the bars turn; a frame bag has to clear bottle cage bolts and the rider's knees. Fit is validated on a jig with the actual accessory layout, not on a bare frame, and the fit report goes out with the sample.

Ordering path for bike bag programmes

From template to shipment, most first programmes run 10–13 weeks. Template development and fit validation are on the critical path, not production.