?REDUCE NECK & BACK PAIN: Proven contour design perfectly supports and aligns your head, neck, shoulder, and back. The slope keeps your head from rolling out of a stable position. Bringing a reduction of stress in the cervical vertebra and spine. Improving sleep and relieving neck and shoulder pain, discomfort rejuvenating your body.?ERGONOMIC DESIGN: Elviros contour pillows are well designed to support by following the natural curve of your body keeps air passages optimal for less snoring and more restful sleep. The cutouts on the side give your top arm a place to rest and keep it at an angle so your shoulder is not hunching over in front of you.?TWO HEIGHTS—DESIGNED FOR BACK & SIDE SLEEPING: SIZE 64*(12.5/10.5)*33cm/25.2 x (4.1/4.9)*13inch (L*H*W), Back sleepers with cervical issues can sleep on the higher side (4.9inch) of the pillow with 2 horns as this side provides better support for the head and cervical, so as to keeps your neck properly aligned with the rest of your body. All the other back/side sleepers can sleep on the lower side (4.1inch).?100% PREMIUM MEMORY FOAM PILLOW: Elviros ergonomic sleeping pillow core is made of high- density slow rebound memory foam. That will provide sleeping firm support with amazing comfort and softness. Keeps its shape and firmness for long term use. THE MEMORY FOAM ITSELF WILL HAVE A VERY LIGHT SMELL, IF YOU ARE UNACCEPTABLE, PLEASE VENTILABLE IT FOR 3-5 DAYS?REMOVABLE BREATHABLE PILLOWCASE: The Made of 38% ice silk viscose with 62% Polyester. A breathable surface lets air circulate to keep the pillow cool while you sleep. It is removable with zippered and machine washable, so you can always keep it clean and smelling fresh. All material is chemical-free for better health.