Outdoor Winter Thermal Ski Socks. Features: Moderate Elasticity, Soft and Breathable, Delicate and Close to the Skin. Mulberry Soft and Comfortable Without Deformation, Slight Heat Stimulates Plantar Acupoints and Promotes Blood Circulation. It Can Be Used for Acupoint Massage on the Sole of the Foot, with Mild Fever and Keeping Warm for Cold Feet. Intense Spot Fever: Fully Improve the Microcirculation of the Foot and Warm the Sole of the Foot for 24 Hours. The Nano Heating Spot is Directly Printed on the Bottom of Socks, Which Can Be Used for a Longer Time. Specifications:Material: Self-heatingPackage Included:1 Pair of socks . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.