Insoles with heat insulation. Providing your feet with adequate protection against the cold is essential on cold, frosty days. Frozen feet are an unpleasant & unwanted feeling. The whole body cools through the feet, which causes discomfort & increases the risk of colds or a runny nose, which is especially difficult for men. Felt insoles for the winter. The insole model is a winter alternative to the usual felt insoles. We place the foot as with those inserts on felt non-woven fabric, but in this model it has been glued with a layer of polyurethane foam, which has very good insulating properties. Thermal insulation - what is that? The bottom side of the insoles is made of aluminum foil, which protects the inside of the shoe from moisture & shields - reflects cold from the inside of the footwear. 1. Top layer - in contact with the foot. Synthetic felt non-woven fabric: Absorbs excess moisture. Cushions the foot while walking. 2. Polyurethane foam. It insulates the foot from the cold sole of the shoe & stiffens the entire insole. 3. Aluminum foil. It protects the inside of the shoe against moisture, has good shielding properties, & provides additional insulation of the foot from the cold. 7 mm thick inserts. The total thickness of the insole is 7 mm, but under the influence of body weight the insole is crushed & adapts to the foot. The insoles get thinner & fit to the shape of the foot, which increases the comfort of using these insoles. material: Non-woven from synthetic felt. Polyurethane foam. Aluminum foil. State: New - first quality Heat-Insulated Shoe Insoles Felt Foam Men’s & Women’s Premium Thick Fleece Inserts Cozy Warm Winter Thermal Fridge Work Warehouse Boots