What gives flexibility to your neck and back?

Answer 1

The Contour Memory Foam Neck Pillow is the answer to obtaining great night sleep. Enjoy all of the health benefits you will receive from sleeping correctly on this wonderful orthopedic pillow. No more stiff neck. This contour pillow is a contemporary cervical pillow that fits the natural contour of your head and neck supporting you while you sleep giving you relief from neck pain, Back pain and shoulder pain. This memory foam contour pillow is an ergonomically designed neck pillow support that holds your neck in the proper position while you sleep, cradling your head, neck, and shoulders with cozy cloud-like comfort. It comes with a free, super soft fiberfill cover for added health benefits and offers a hypoallergenic smooth, soft and cool surface for you to sleep upon. This pillow cover is hypoallergenic and helps you to breathe safely, fantastic for people who suffer from Allergies and other breathing problems (i.e. Asthma, snoring, sleep apnea or obstructive sleep apnea.)

Answer 2

Discs of cartilage between the vertebrae