ADJUSTO-BLOCK HEAD REST & HEAD BLOCKExtra Deep Curvatures allows for multiple usesMolded from Resilient, Impervious Hard Black RubberNon Skid Texture

Provides 10 different positions for posing and elevating head, neck, arms and legs. Does not skid or slip on table surface. Curved base permits drainage materials to flow freely. Durable and sanitary. Black. 5 ¼”H x 6 ½”L x 4 ¼”W.