Highlights Size: One size fit most (290x290x20mm) Light weight and easy to use. Function: Cervical Spondylosis Relief Comfortable and non-threatening. Adjustable

Highlights: Material: Cloth, PC, spring Size: 29.5*28*27cm Strength: Resist about 20kg/pcs, Boost about 30kg/pcs Product Description: 1.This product can resist