3/4 Layer Inflatable Air Cervical Neck Traction. 

This is a "One Size Fits All: Neck Support to help relieve Pain and discomfort due to Neck Compression or pulled/ sore neck muscles. You are in control the Soft Neck Collar providing the exact amount of stretch you need. The collar can be inflated for a stiff stretch to relieve stress or deflated just enough to act as a comfortable pillow