Revolutionary two-part construction of the System boots goes hand-in-hand with the Byerly System binding. The result is a lightweight, customizable feel that is comfortable throughout the entire ride. Includes EVA-lite outsole and heel impact inserts, custom Ultron insoles, and heat moldable liner. System boots also feature flow-through drain panels and outsole to prevent water accumulation. Traditional lacing system for a no-mess tie-up before you hit the water.