ZUCA SFDB171 Sport Frame in Dark Brown 89055900171 Sport Bag For use with any Zuca Sport Insert Bag, sold separately in dozens of different prints and patterns - build your own! Integrated seat. 39.5 Telescoping handle. Dual wheel system climbs stairs and curves with ease. Strong aluminum alloy frame is light yet the seat is rated to hold up to 300 lbs. Magneto dynamic 4 polyurathane wheels absorb shock and make for a serious silent ride. Feet made of nylon-6 go easy on scratchable surfaces. Gear platform to carry additional loads. Chrome plated, rust resistant screws.