Soft Material - Breathable memory form provides better air circulation to keep you cool and dry. Our hypoallergenic rayon/polyester proprietary blend pillowcase feels silky soft and smooth while provides dust mite protection. Thermostatic Design - It is scientific and environmental friendly, and it can sense the temperature and never gets hard as a rock in cold weather.Keep a good sleeping position and create a comfortable sleeping environment. Pressure Relief - Our pillow can protect your cervical vertebrae effectively and make cervical vertebra therapy professionally with memory foam.It is the best pillow for sleeping in the world! Orthopedic Support - Made of premium velvet, which is skin friendly, comfortable and not easy to deform. The Therapeutic Ergonomic Design reduces neck back pain, alleviates shoulder stiffness, promotes proper spine alignment, and helps your muscles relax. Daily Maintenance - the inner pillow case is breathable; the outer breathable mesh cover has a hidden zipper to detach it from the pillow and can be machine washed and tumble dry; don't dry-clean; do not wash the memory foam core.