The Sentinel is designed for use on shorter walls or as a sub-bag under your main haul bag. It is made of Durathane, which is 10 times more abrasion resistant than the vinyl-coated nylon used in most other haul bags. It also conveniently doubles as a tough crag pack. It has an RF welded main seam, forming a leak-proof seal that is stronger than the fabric itself. It has a double-layer ballistic lid with a zipper for easy storage. This bag is well-padded, with a removable back pad and an ergonomically-cut suspension system that tucks away in seconds for hauling. It has custom aluminum closure buckles, a top compression strap, and offset haul points. Capacity: 2800 cu. in. (46 L) Weight: 4 lbs. 11 oz. (2.1 kg) Dimensions: 25" by 12" by 9" plus 4" collar (635mm by 305mm by 229mm plus 102mm) Color: blue