These socks are uniquely effective in treating and preventing dry cracked skin, without the use of messy lotions. Powerful treatment, but gentle enough to be approved for diabetics. The socks are lined with Silipos' proprietary soft polymer fragrance-free gel that comfortably conforms to your feet while gradually releasing medical-grade mineral oil to moisturize and lubricate the skin. The gel is hypoallergenic, does not support bacterial growth and has been dermatologist tested. The cotton/nylon/Lycra socks are latex free and have a non-restrictive cuff that keeps them from falling down, but does not restrict circulation. Gel Therapy Socks are washable and re-usable and, when worn for at least two to three times per week, will provide moisturizing benefits for months, depending on frequency and length of use. These socks come as a pair; one-size-fits-all.