Pre-owned H2Zero Omni Dry Backpack 103L in great condition. This dry backpack is huge, big enough to store a camping tent. The previous owner used it to carry all of their underwater camera equipment. When full and buckled, it measures 28″ x 15″ x 15. Laying flat and unfolded, it measures 39″ x 30″. The material is vinyl, it has a 3 roll closure, top and side compression straps.