FUNKY TRUNKS - EXPANDABLE ELITE SQUAD TRAINING BACKPACKThe ultimate backpack for training and competition. Up to 36L capacity with the ability to expand to 40L capacity. Multiple segments including fabric lined goggles compartment and waterproof base compartment for shoes and wet towels. Mesh compartment for your drink bottle and large main section with laptop pocket. Comfortable padded back panel and shoulder straps with chest strap for postural support.