Three-layer insoles made of warming fleece, flexible latex foam and aluminum foil, providing your feet with comfort and warmth even on the most frosty days. The applied layer of fleece ensures that the optimum temperature is maintained inside the shoes, the flexible latex foam is responsible for softness and comfort, while the bottom of the aluminum foil, thanks to its thermal insulating properties, prevents heat transfer to the outside. Recommended mainly for autumn and winter footwear. UNIVERSAL SIZE! Simply cut the insole according to the marked lines on the back to fit your shoes, you can also cut them to perfectly fit the shoes you are using. For proper hygiene of the insoles, it is a good idea to replace them every 6-8 weeks. The package contains two insoles (left and right). Renovator.