With lock system , make sure the set position won't be changed after adjusting.

Designed with hole on the throat position , it is convenient for the treatment of throat and trachea.

The height with several levels .

Shape fits for human neck.

With special material , allowed X-ray, CAT and MIR scan

Designed for use an a wide range for patients;

The size is designed for all kinds of patients;

Using adjusting allows for universal height;

Keep clean for reuse, prevent bacterial growth on it.