Features:-Made of high-quality EVA material, it does not contain any harmful chemical ingredients, will not irritate the skin, has slight elasticity, can provide firm and strong support, and is not easy to deform.-It perfectly fits the human cervical spine curve, naturally supports the neck, head and shoulders, and provides vertical, horizontal and other three-dimensional supports as well as curvature traction during use.-It relieves neck and shoulder muscle soreness and fatigue, and restores the normal curvature of the cervical spine.-It is ideal for employees, office workers, students, drivers and anyone who needs to bow their head for a long time.-Lightweight and not big in size, it won't take up too much space, easy to carry and store.Specification:C.