The Blackhawk YOMP Pack offers wide-open access to a generous main compartment and multiple storage compartments thanks to its unique Y-zip configuration. Unzip the top portion only or unzip the entire pack for full access to contents. Constructed of durable 500 denier nylon Durable spring steel frame for flexible, lightweight structure Accommodates 100-oz. hydration reservoir (sold separately) High-quality zippers with large zipper pulls Durable quick-release buckles and integral key clasp Multiple rows of S.T.R.I.K.E.(R) webbing for attaching pouches or accessories Padded shoulder straps with non-slip material to keep weapon sling in place Adjustable sternum strap and three-point hip belt for comfort under heavy load Thick lumbar pad on waist belt for load-bearing support Adjustable external compression straps accommodate various loadouts Air vent support panel to create load separation and prevent load shifting Attachment ports on bottom for external gear storage Two internal padded side compartments with mesh gearkeeper gussets Dimensions: 18"L X 12"W X 7"D (main comp.), 15.5"L X 1.5"W X 5"D (external side comps.), 12"L x 5"W x 1"D (internal mesh pockets), 15"L X 12"W X 1"D (internal hydration sleeve), 7"L X 9"W X 1"D (top flap comp.)