R4 RACE COLLARWeighing in at only 635 grams, the R4 is a lightweight, form fitting race collar offering protection against neck and collarbone injuries. The R4 uses EVSs elastic Cross Strap system to secure the collar firmly in place, while the Rapid Lock closure system makes for easy front entry. With its low profile design, the R4 Race Collar can be worn on the track or trail with minimal distraction and maximum comfort. KEY FEATURES Elastic cross body strapping