Kassy Warm Original Thermal Insulated Socks - Unisex (Men/Women/Boys/Girls), 2.4 TOG Rating with Extra Cushioning & Padding, Comfortable Fit & Adjustable Size, Black Locks the heat In! Winter warmers – 2.8% wool, 93.4% Acrylic, 2.5% Polyamide, 0.9% Elastane, 0.4% Spandex. TOG RATING 2.4, each sock has been carefully padded and cushioned to ensure that your feet are surrounded by warmth. This increases both the comfort and special fitting for the sock. Locking the heat in. and the cold out.