ProCare California Rigid Cervical Collar, Medium, 4¼ Inch Height, 1 Each Relaxation Sound Systems an under seat pouch Style:Pair (Left & Right) an under seat pouch Premium 23 die cast aluminum base with satin finish top * 5 leg design for greater stability * Full size diameter top and base for comfort and stability * 4 thick seat for extra comfort * Black hooded dual wheel nylon casters * Pneumatic height adjustment * All seats have 3 4 thick solid plywood base * Lever controls height * Knock down design saves on shipping * Easy no tools required assembly * Premium stain resistant woven knit backed vinyl upholstery * 250 lbs The tracheotomy collar provides support for both extrication and rehabilitation Collar maintains head in neutral position and supports occipital and mandibular areas