What is the Physio Room.com Neck Collar? The Physio Room.com neck support is a semi-rigid collar that will limit the movement of your neck & assist the head & chin after injury or trauma. This padded brace is comfortable & simple to apply providing enhanced stability to help ease the associated pain caused by: Whiplash Neck Muscle Spasm Stiff Neck When can I use the Physio Room.com Neck Collar? The Physio Room.com Neck Collar can be easily secured with the adjustable Velcro strapping, while the foam body will conform neatly to the contours of your neck & chin for a snug fit providing a practical solution to neck pain management. The collar can be worn over extended periods & is suitable for night-time application. Which size do I need? Measure around the neck to determine the correct size: Small: 27-33cm (10.5-13 inches) Medium: 33.5-37cm (13-14.5 inches) Large: 37.5-43cm (14.5-16.5 inches) The Physio Room.com Neck Collar is machine washable & ultra quick-drying.