Features： 1、Multiple Holes: Can provide better ventilation, breathable, make you feel comfortable when used for a long time. 2、Pain Relief: Neck brace has obvious effect on symptoms such as neck pain caused by long hours of work, study, or driving. 3、Adjustable Height: Separate design, height can be adjusted freely according to the height of the user's neck. 4、Purpose: Protect your neck, suitable for cervical spine fracture fixation, cervical dislocation, reduction fixation, etc. 5、 Material: Made of high quality PVC material, safe and eco friendly, stable and durable, easy to use and clean. Specification： Item Type: Neck Brace Material: PVC Uses: Suitable for cervical fracture fixation, cervical dislocation, reduction fixation, etc. Size Chart: Size Length Suitable WeightSuitable Neck Circumference M 54cm / 21.3in 50?80kg / 110.2?176.4lb 32?37cm / 12.6?14.6in L 59cm / 23.2in Above 80kg / 176.4lb 37?43cm / 14.6?16.9in Package List： 1 x Neck Brace