Observer (Stem-mounted child seat)The Hamax Observer is a front position seat that allows your child to view the world in a brand new way and offers easy to use adjustable features designed to be single handed so you can leave one hand on your bike when securing your child. Description: One Hand Adjustments For Safety Footrests, foot straps, and safety harnesses offer easy adjustability for children from 9 months* to 33 pounds. Every adjustable feature is designed to enable quick,