Gel Cushion Lining. Moisturizes + Protects. 90% Cotton 10% Spandex. Contains one pair of Soft-Soles™ Gel Slips. Free trial size lotion included These super-comfortable, ultra-plush. Gel Slips not only feel. fantastic , but also work actively to moisturize an condition dry, dehydrated skin. The secret is in the proprietary Transdermal Gel Matrix™ ™ lining which continuously delivers a skin-nourishing infusion of Jojoba Oil, Vitami.