Usage Tips:{ORTHOPEDIC LEG PILLOW HELP REDUCE DISCOMFORT} Are you always uncomfortable at night for sleep with back and hip pain? The Knee Pillow is the perfect choice for those looking for pain relief as the cushion comfortably supports your legs & knees to provide proper sleeping alignment & positioning to eliminate those painful pressure points. Very suitable for all posture sleepers(side, back & stomach). The innovative ergonomic support design help you to improve sleeping quality.{VENTILATED ERGONOMIC MEMORY KNEE PILLOW} Do you often toss and turn because you can't find the the right knee & leg pillow that suits you?? Featured with the size of 10.638.55.5/3inches, our ergonomic pillow is perfect for all positions of sleepers. Unique tiny butterfly shape design, add middle airflow hollow hole design, give your legs or knee proper support and cooling whole night sleep. Try them out and experience the ultimate in comfort and support.{SKIN-FRIENDLY PILLOWCASE & ELASTIC STRAP} Sleep comfortably all night long. Each Knee Pillow comes with an easily removable & washable pillow cover, skin-friendly & breathable for your good sleep. Our hip pillow for side sleepers also comes with a high-quality zipper that wont break or wear down in the wash. Unlike other knee and hip pillows, our pillow comes with an elastic strap to keep the pillow stay in place when you sleep or rest.{SLOW REBOUND SAFE MATERIAL} The premium quality memory foam is firm and not too soft for maximum comfort and great relaxation of your hips, joint, back, legs, knees and ankle. In addition, you can take it as a car pillow to relax you neck. The leg pillow will rebound within 3-5 seconds when no press, non-deformation all the year. Please NOTE that the memory foam pillow core CANNOT be washed!{HASSLE-FREE PURCHASE} knee pillow provides good solution fit men & women comfortably sleep. Memory foam will have a very slight smell after passing through a high temperature and airtight transportation environment. This is a normal phenomenon. After receiving it, please place it in a cool and ventilated place for 3-5 days.