Our Small Expandable laptop backpack is designed to be the perfect size for your daily commute and can easily carry your workout gear in its hidden, expandable compartment. Easy-access, padded side-zip computer pocket for 13" laptops. Spacious main compartment with organization pockets, fleece-lined tablet pocket and removable key leash. Hidden, zip-away side water bottle pocket. Separate, patent-pending, expandable packing compartment holds 1 to 2 changes of clothes. Meets most popular carry-on requirements as well as fits under most seats. Packing compartment with easy-access suitcase lid. Hidden trolley sleeve slips over wheeled luggage handles. Custom-developed, durable, water-resistant body fabric. Molded, comfort-cool foam back panel. YKK water-resistant zipper with custom-designed pullers. Dimensions: Unexpanded: 17" x 12" x 5"; Expanded: 17" x 12" x 9". Dimensions: Unexpanded: 17" x 12" x 5"; Expanded: 17" x 12" x 9". Fabric: Suiting-inspired, custom-developed, water-resistant 1200 denier two tone polyester body fabric. Tested to carry loads up to 40 pounds.