The hamax siesta rear child seat has been designed for children aged from 9 months until they weigh up to 22kg every hamax child seat is designed to essentially grow with the child it safely holds this is made possible by the adjustable safety harness and foot rests which have been built into this rear child seat not only is this child seat simple and easy to fit onto your bike but it will provide your child with ultimate comfort while protecting the spine of your little one thanks to the fre