adidas Citywide Sling Backpack 100% Polyester Imported Lifetime Warranty - built to last. Size is 11.25L" x 12.25W" x 19.50H" 3 outside zippered pockets, internal zippered organization pockets, and padded computer pocket so you're School ready Durable material built to stand up to wear and tear and hydro shield water-resistant base Large size to hold everything you need for the day Loading shoulder strap and padded Air mesh back panel for total comfort