Oceanweave 600D reclaimed fishnet polyester with waterproof polyurethane coating. Hydracore liner provides an exceptional IPX5 waterproof rating. Rixen & Kaul Vario 2 spring-loaded hooks immediately adjust from 6mm-16mm without any need for tools. Triple webbing tie-downs allow variable size/shape loads to be carried outside of the main cavity - ideal for stowing U-Locks on the go. Ultra-stiff Polypropylene backing plate keeps the bags shape and structure for easy loading and unloading. Intuitive waterproof roll-down closure system. Ultra-visible three way 3M triangle logos. Carry handles for convenience headed from and to the bike. Lifetime warranty through Axiom