35 Below presents you with this, as seen on tv thicker and insulated socks that keep feet warm in the cold! These soft and fluffy thermal socks originate from aerospace fabric technology. Soft-touch aluminized threads are interweaved to produce these 35 below socks that are cozy and breathable. The threads of these winter socks reflect and distribute natural radiant heat to help maintain warmth, while the breathable fabric helps circulate the air to keep feet dry. These thermal socks are ideal for all outdoor enthusiasts such as hunters, hockey players, skiers, hikers, and cold weather bikers. Note: It is machine washable and tumble dry, so no special cleaning is required.