This pillow set consists of three pillows. There is a small (travel size), medium (standard size), and large (king size)pillow in the set. The pillows can be used individually or in combinations. They are great for position stabilizers. The patented pillows have a unique non-confining design with curve and narrowing end for customized support. The pillows are versatile, adjustable, and conforming for the user. They are soft, lightweight and portable. Made from 100%hypo-allergenic natural cotton flanel with 100% polyester filler, the pillows are machine washable and dryable without clumping. The pillows can be used without pillowcases. Zipperless pillowcases are sold separately. MADE in the USA!