Red Rock Outdoor Gear Assault Pack 600D Polyester 10" high Country of origin: China Mesh ventilated padded back panel with Velcro top closure Fully adjustable contoured padded shoulder straps with hard plastic D-rings for attachments Medium 2 liter external organizer pocket for survival essentials Four quick release compression straps for expansion or consolidation Size: 9.5 x 18 x 12.5 -Inches (W x H x D)