The blue Donjoy collar is used to treat cervical problems. Its function, completely covered with cotton, is to immobilize the spine at the cervical level. Thus providing comfort when placed on the neck and head rest. In addition, it contains a design that supports the cervical spine in a neutral posture, which prevents rotational, lateral and anteroposterior movements of the head. It measures 10.5 cm in diameter and size 3 for people who want to remedy cervical discomfort. It can be used in rehabilitation after an injury or a sprain that bothers the neck. It also has a closure for head support. The Donjoy necklace, which is indicated for people with cervical difficulties, can be worn on the neck.