For those organizations and sanctioned events which do not require a HANS device, a neck collar (or helmet support as it’s more widely known) can greatly reduce the strain on your head and neck due to the high corner loads imposed on a driver. The G-Force 360 degree neck collar is constructed of high density fire-retardant foam and covered in soft knit Nomex material which is removeable for easy cleaning. SFI 3.3/1 Certified and available in Black, Blue and Red. Sizes Small (up to 12 inch neck size) Medium (12 to 15.5 inch neck size) and Large (15.5 and up)