Features: Fun designs make your child's scooter stand out in the crowd Built with durable, lightweight plastic Compatible with T-bars on Mini, Maxi, and Mini 3in1 Scooters When using Scootaheadz, it is not safe to use other accessories including bags, bells, etc. ScootaHeadz are not compatible with joystick, O-bar, or chopper-style steering For ages 3 and up