Trust Simpson to produce a neck brace that's suitable for any type of competition, from drag racing to off-road to dirt racing. The heart of the 360 degree, wraparound design is high-density "compression spring" foam that acts like a shock absorber to cushion the head and neck, and reduce fatigue. The one-size styling closes with an adjustable Speedfit fastener. The fire-retardant, knit Nomex cover is removable for uncomplicated cleaning. SFI 3.3 Approved.