Zuca Sport Insert Bag Tiger with ZUCA Sport Frame Crouching Tiger, Hidden Stuff. This cool Zuca Insert will transport all your essentials with powerful agility. It's like having a black belt in hauling things around. Choose your Sport Frame: Inspired by aerospace technology, the aluminum alloy frame is light, super strong and rated to safely support up to 300 lbs. The dual wheel system climbs stairs and curbs with ease. The magneto dynamic 4" polyurethane wheels absorb shock and make for a seriously silent ride The removable, hand washable, Tiger Insert Bag is made from premium water resistant 600D polyester The Sport Frame comes with a 39.5 Telescoping handle, and a gear platform to carry additional loads.