Buy Thermic Insoles at the best price. The Thermic Insoles are specially designed to keep your feet warm and cosy preventing external cold fom reaching your feet. To wear the Thermic Insoles, just cut along the premarked guides to fit your feet and insert them in your footwear with the fleece side upwards. The Thermic Insoles are ideal for shoes, boots, trainers or any other footwear. One size fits all.