gel-lined socks 1. gel lined on the whole inside of the sock. 2. massage the whole feet. Gel-lined socks:gel lined on the whole inside of the sock.Mineral oil ad moisturizer and emollient Softens and soothes dry skin, treats cracks and prevents skin chapping Absorbs pressure and friction Cushions the whote foot.Repairs foot wounds Cools your feet in summer, warms them in winter gel-lined socks