Bowbear Baby Half Ruffle Leg Warmers Protect baby's knees when crawling and from exposure to cold, sun, and insects. Also keeps little legs warm during diaper changing. Can be worn on the legs or arms. Size: Approximately 12 inches long. Can be worn on entire leg for babies and up to the mid-thigh or knees for toddlers. Made out of cotton, spandex, polyester.