Five Star Big Mouth Backpack Polyester Large patent-pending main compartment opens extra wide (12" wide x 8" front), Front/back panels, laptop pocket (holds up to 16" devices) are padded for extra protection, 13" x 18" x 8", Gray/Black Multiple interior pockets provide convenient storage for smaller items, Adjustable straps are padded to provide heavy-load support Dual zippers to easily open and close, Side exterior pockets perfect for water bottles, Top loop to hang backpack in locker, polyester, constructed of durable materials, water resistant Limited Lifetime Warranty Backpack is designed to withstand the challenge of making it through the school year