Abstract: A cervical collar assembly to immobilize the neck and head of a user. The assembly includes an adjustable and conformable shell member having a pad member secured on its interior to engage the skin of the user. The shell member is comprised of a front member, a back member and means to adjustable join the front and back members. A chin support member is adjustably secured to the front member and an occipital support member is secured to the back member. The front and back members are provided with a plurality of elongated slits which permit the shell member to conform to the neck and head areas of the user. Further, the front member is provided with opposing upwardly extending tab members to engage the mandibula of a user's jaw to aid in the immobilization of the neck and head of the user.