FLEXI WOOL THERMO insole with transverse and longitudinal arch support is suitable for classic, boots and sporty women's and men's winter shoes. It balances the flat foot, insulates the footwear and absorbs shocks, especially in the heel area. The heel area is padded with Air-gel shock absorbents with the highest damping parameters. The insoles are made as a double size, e.g. 41-42, and for the smaller size /41/ it must be shorten by 5 mm at the tip with sharp scissors. The rear part of the insole is reinforced with a carbon part that makes it more abrasion resistant and increases durability.