BAMA Alutherm Airtech 3-layer insole, suitable for cold autumn and winter days. Its multi-layered structure provides various benefits. The top layer, made from 100% wool, keeps feet warm and creates a feeling of comfort. The middle layer, made from soft foam material, reduces pressure. The aluminum membrane with an anti-slip section protects against cold and moisture. The BAMA Alutherm Airtech insole is placed inside shoes with the wool side facing up. It is suitable for all types of shoes. They can be washed with cold water. Air dry flat, away from direct heat sources.