The Schwinn double bicycle trailer has a mounting attachment that fits most standard adult bike frames and also allows you to use the trailer as a stroller for 2 kids. Both its front and rear wheels have a quick-release design for smooth disconnect. It has 3-point harnesses for holding your kids securely in place. The trailer has a screen to safeguard your kids from wind, rain and insects, and a safety flag for extra visibility. Foldable frame for convenient storage. 100 lbs. capacity. All the necessary hardware for assembly included. Ages 1 and up.