Nylon Imported Teardrop-shaped design with spacious main compartment Internal MP3 player pouch and rubberized headphone port Weather resistant protective over flap Volume: 1000 cu.in. / 16L Weight: 2.7 lbs. 1000-Denier water and abrasion resistant light-weight ballistic nylon fabric Large-capacity 1,600-cubic-inch backpack with single-shoulder design for easy on/off Padded nonslip shoulder strap with PALS webbing for accessory attachment Large main compartment and several internal accessories pockets Hydration-compatible design fits 100-ounce CamelBaks; side water bottle pocket Large-capacity 1,600-cubic-inch backpack with single-shoulder design for easy on/off Padded nonslip shoulder strap with PALS webbing for accessory attachment Large main compartment and several internal accessories pockets Hydration-compatible design fits 100-ounce CamelBaks; side water bottle pocket 1.5-inch concealable, adjustable waist strap; weighs 2.8 pounds empty