Burton Provision Backpack - 1220cu in Green Lake Triple Ripstop, One Size Volume: 1220 cu in Dimensions: 19.5 x 13.5 x 4 in Pockets: 1 external accessory Material: [Wood Thrush] bluesign-approved 400D nylon, [Gray Wool] wool/polyester blend, [Vintage Aloha] cotton/poly blend, [all others] 600D polyester Recommended Use: snowboarding, school