Low-profile under jersey roost deflector The Race Subframe sets the benchmark for a low-profile, under the jersey chest guard. With ample ventilation and full plastic coverage, the Race Subframe guard is the ultimate in unrestricted movement from an under jersey roost deflector. Plastic back and chest plate Designed to be worn underneath the jersey Strategically placed vents for maximum cooling Waist straps are easily adjusted for custom fit 21864-001-S/M 21864-001-M/L