Decreases range of motion supporting neck. Contoured serpentine design for patient comfort allows the chin to rest on the collar. Includes 6" extension. 1/Bx 10/Cs #55974001-Infant 2.52" #307000-Child 3" #55974002-Junior 3.5" #307001-Small 4" #307002-Medium 4.5" #307003-Large 4.5" Contains Latex UNSPSC#42241803