Natural Latex This latex pillow contains 93% natural latex, which has the advantages of hypoallergenic, strong support, and fragrance. Due to some people being unable to accept the smell of latex, we selected high-quality charcoal, extract fiber, with the latex fusion, which can absorb odor. This upgraded pillow can provide you with a longer deep sleep. Ergonomic Design The ergonomic pillow is with size: 23.6 x 14.9 inches ( L x W ), which has two available heights to support your cervical and head, which can relief neck and shoulder pain, decreases snoring. Help you to find a more relaxed sleep position, such as side, stomach, back sleeping and low pillow sleepers etc. Double Pillowcase This neck pillow has double pillowcases with zippered, detachable and machine washable.