Feature:1. Effectively relieve the soreness and discomfort caused by neck compression and poor blood circulation. 2. With open throat design, suitable for neck support after tracheal incision, intimate and comfortable. 3. The front neck collar and the back neck collar are separated, which can better adjust the width to adapt to the tightness of the neck. 4. Multiple hole hollow design is highly breathable and durable. It is not easy to deform and is comfortable to wear. 5. Breathable and lightweight design provides you with the best cervical spine care. Specification: Item Type: Neck Cervical Tractor Suitable People: Adults Size Front Height Back Height S 14cm / 5.5in 19.5cm / 7.7in M 15.5cm / 6.1in 20.5cm / 8.1in L 16cm / 6.3in 21.5cm / 8.5in Package List:1 x Front Neck Suppo