Child bike seat that can be mounted onto the back rack on a bike. Need that back rack for mounting, but can just buy one if your bike doesn't have one. The seat is light and easy to install for each ride or switch between bikes. The seat is big enough and the safety harness is very adjustable so this seat can be used for children 1-4 yo (just watch the weight limit of 48 lbs). Adjustable safety belts and foot rests with straps.