Used once in beautiful like new condition. Never was expanded. Non smoking home. Pets in home. (Can ship mid week only this month. ) About this item MODERN DESIGN AND ORGANIZATION: Thoughtfully designed with easy access front zip compartment with several interior pockets and key leash, interior zip-around mesh panel pocket and large main compartment with compression straps & fold-down shelf LIGHT, COMPACT AND FITS UNDER YOUR SEAT: The bag comes equipped with stowable backpack straps, 4 exterior compresions straps, zip expansion for an extra 1.5" and top, bottom and side carry handles CONVERTIBLE BACKPACKS ARE IDEAL FOR EVERY TRIP: Wear as a backpack for hands-free travel, tuck backpack straps away and carry brief-case style. PRODUCT SPECIFICATIONS: Laptop Compartment Dimensions: 18" x 11.75" x 1.5"; Size: Medium; Exterior Dimensions: 19.5" x 14" x 9"; Linear Inches: 42.5"; Weight: 3 lbs, 5 oz; Capacity: 2538 cu. in.