FEATURE: - Enhanced with woven, aluminized fibers to keep the feet warm in the cold. - Reduces moisture and perspiration to keep your feet amazingly dry. - Same fabric technology developed for aerospace to keep feet warm in the most extreme conditions. - Wear as regular socks or as sock liners for extra protection. - Fits all shoes and is ideal for daily activities. - Great for outdoor enthusiasts. - Machine wash cold with like colors; do not bleach; tumble dry normal. SPECIFICATION: Material: Aluminized Fibers + Cotton Sock Size: One Size Style: Short / Long Color: Black PACKAGE INCLUDED: 3 Pairs * 35 Degrees Thermal Socks NOTES: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.