Dog Backpack on Wheels - Backpack Style and Roll-along Transport - Red Deluxe Backpack Pet Carriers have padded shoulder straps for backpack-style carrying. wheels and a telescoping handle for roll-along transport. A zippered front storage pocket, and a berber mat for comfort Each measures 12"L x 9 "W x 18 1/2"H Holds pets up to 22 lbs other colors available at Pets Pro Shop store front