The NcSTAR VISM Patch Backpack in black features an innovative patch mounting system with a massive 17" x 11" soft loop surface for displaying your hook-backed patches plus additional patch panels throughout.NcSTAR VISM Patch Backpack - BlackLarge 17" x 11" soft loop patch surface on main panelAdditional soft loop panels on sides and shoulder strapsMain compartment: 18"L x 14"W x 3"DBuilt-in hydration bladder pouch inside main compartmentTactical design with durable constructionPerfect for military law enforcement airsoft or outdoor enthusiasts who want to display patches while carrying essential gear with hydration capability.