These insoles are made from CosyCushion, a special shock-absorbing material which reduces impact on your feet and legs and helps to prevent symptoms ofstep-shock, including headaches and backache. Designed to make walking more comfortable, its like having millions of tiny springs beneath your feet. As these insoles are only 3mm thick, they fit comfortably into most shoes and slippers, they are also antibacterial to keep your feet and footwear smelling fresh. With the added benefit of a microfibre top coating, theyre durable, breathable and tear resistant.