Sealock supplies the SL-C878 Waterproof Travel Duffel Bag with Airtight Zipper, a welded 840D TPU duffel rated IPX7 with a genuine airtight waterproof zipper, a front waterproof zip pocket, an internal zip pocket, a reinforced base board, twin webbing handles and a detachable padded shoulder strap. 41.5 × 25 × 19 cm, 0.75 kg. OEM/ODM from MOQ 300, FOB Guangdong.
Sealock manufactures heavy duty waterproof duffel bags for commercial fleets, marine operators, outfitters, and institutional buyers from factories in China and Vietnam. Buying duffels for an organisation is a different exercise from buying them for a store. The unit price matters less than the replacement cycle, the specification has to hold across every bag issued, and a failure in the field is an operational problem rather than a return. This sets out what "heavy duty" has to mean at commercial grade, and what a fleet specification should contain.