adidas Skyline Backpack 100% Polyester Imported Lifetime Warranty - built to last. Size is 12L" x 12.25W" x 19.75H" 5 outside zippered pockets, internal zippered organization pockets, and a padded and lined 15.4"" computer pocket Hydro shield water-resistant base XL size built with durable material - built to stand up to wear and tear Loading shoulder straps to ease the weight, padded tricot back panel for total comfort, and compression straps to adjust the size to your gear