The Abound Handrail was designed with high-quality aluminum construction, that can support a weight capacity of up to 143 lbs, and is designed to fit children from 5-10 years old. The Abound Seat Pad was designed to add comfort to the joy ride, featuring a soft PU leather cushion. Material made of aluminum Dimensions: L720mm - W610mm - H575mm Compatibility Compatible with Abound electric bikes only Compatible with the Thule Yepp Nexxt Maxi Rack Mount Child Seat, for riders of smaller proportions