Thule RideAlong Mini Bike Seat Designed and tested for children from 9 months to 3 years old, up to 33lbs (Consult a pediatrician for children under 1 year old.) Universal quick release bracket, fitting both normal and ahead stems, allows seat to mount/dismount from bike in seconds Single-hand adjustable foot straps and foot rests allow for convenience and flexibility as the child grows Safety indicator integrated in the quick release bracket to show correct mounting of the seat Only mount to the handlebar stem. This product fits normal stems with a diameter of 20-28 mm (0.78-1.10) and ahead stems with a diameter of 28.6 mm (1 ). Adjustable padded 5-point harness provides maximum comfort and a safe, custom fit