ZUCA Road Trip Sport Insert Bag with Sports Frame water resistant 600D polyester 39.5" Telescoping handle Aluminum alloy frame is light, super strong and rated to safely support up to 300 lbs Insert Bag is made from premium water resistant 600D polyester Dual wheel system climbs stairs and curbs with ease; Magneto dynamic 4" polyurethane wheels absorb shock Gear platform to carry additional load