EVS R4 Black Youth Race CollarEVS Youth R4 Race Collar The EVS R4 is a lightweight, form fitting race collar offering protection against neck and collarbone injuries. The low profile design makes it a comfortable yet protective piece of gear you can wear on the track or on the trail. Features: Hard molded upper surface disperses energy to the PU core Hi tensile closed cell PU core absorbs impact energy Bio foam liner provides extra impact absorption Lightweight and form fitting