Reax Poseidon Dry Bag The Reax Poseidon Dry Bag delivers waterproof, adventure-ready security for your most precious gear. Included universal mounting straps make installation a breeze on virtually any bike. For longer journeys, additional bags or hardware can be lashed to the many D-rings and attachment points provided. Bags feature reflective logos, reflective panels at the sides and a removable shoulder strap. Adjustable Reax alloy G-buckle compression straps, internal polyurethane support for the load floor and a full length zippered organizer pocket keep your cargo from shifting about when the road ends and the trails start. Features 100 waterproof roll-top dry bag 500D PVC tarpaulin construction Thermo-welded seams Easy roll closure reduces binding and improves water resistance Removable internal polyurethane support retains shape when empty Full length internal mesh organizer pocket with YKK zippers Multiple D-ring and accessory attachment points to tether gear and additional Reax bags Latitudinal and longitudinal compression straps to secure load 2 additional Reax G-buckle load straps included Removable shoulder strap (included) Included mounting straps (4) Reflective Reax logos and panels Universal fit 25 Liter: 20.5 L x 11.5 W x 10 H (load opening 19) 40 Liter: 24 L x 13 W x 10 H (load opening 22)