All of the materials are certified by the ASTM, safe and non-toxic “-4-wheeler with no pedal toddler’s toy ride balance bike-No pedals design & widen enclosed wheels ensure baby feet safety-EVA wheels are shock absorbing and noise reducing” Boost your child’s confidence by giving them a more fun and effective way to learn to ride a bike! “-The seat is ergonomically designed with the tail up to prevent baby from turning backward-Smooth surface without burrs to prevent baby injury”