ClearCollar has developed the first totally clear cervical collar to immobilize a suspected cervical injury which are available in an adjustable cervical collar or non adjustable cervical collar. Stifneck has long been an industry leader in cervical collar. Rapid Deployment Products, Itec, Dick Medical Supply, and Laerdal offer head immobilization with Speedblocks, Multigrip disposable head immobilizers, as well as the head vise by Morrison Medical.