Before the inception of FHR devices and the associated ruling making them mandatory for use in competition, there were neck braces. These collars made from high density foam are covered with a fire retardant Nomex fabric and sit on top of the shoulders underneath the helmet, offering support for the neck in the event of an impact. As these neck braces are not compatible for use with a fitted FHR device such as a HANS or Hybrid style, they are best suited to competition where it is not required to use an FHR device. This includes the like of autograss, oval racing or drag racing. Secured using a Velcro strap at the front, these neck braces offer a universal fit with some products featuring adult or child sizes.