the thuasne ortel c3 rigid cervical collar provides your neck with firm support to help relieve instability and therefore reduce pain. unlike other supports the ortel c3 collar is anatomically designed and has a softly padded edge for areas in contact with your skin to provide you with the utmost comfort. the c3 rigid collar has been created with perforations for improved air circulation and comfort. the support also has chin support meaning you can rest your chin whenever you need to.  thuasne's rigid cervical support can be adjusted in height from 9cm - 13cm according to the height of your neck. the support has also been designed to allow easy precise and quick morphological velcro adjustments. size guide the thuasne ortel c3 rigid cervical collar is available in three sizes. to find out which size is suitable for you measure the circumference of your neck with your head upright and select your required size using the table below. size        neck circumference (cm) small         28 - 33cm medium   34 - 39cm large         40 - 46cm