Thule RideAlong Child Bike Seat Seat can be mounted/dismounted from bike in seconds with the universal quick-release bracket, fitting most bike frames (27.2-40 mm diameter round frames and maximum 40 x 55 mm oval frames) Integrated protection wings safeguard your childs hands when the bike is leaned against a wall and your child rides safely with the adjustable 3-point harness Designed and tested for children from 9 months* to 6 years old, up to 48.5 lbs/22 kg.*Consult a pediatrician for children under 1 year old Smooth, comfortable ride for your child due to the DualBeam suspension system that absorbs road shock Ensures a perfect fit as your child grows thanks to the single-hand adjustable foot rests and foot straps