NATURAL: The insoles care carefully crafted from natural leather to ensure comfort and best care for your feet. The insoles are very thin, average thickness is around 2.25 mm. LEATHER: The top layer of insoles is made of genuine leather natural in colour. Leather absorbs sweat and makes your feet breathe. ACTIVATED CARBON: Underlayer is made of activated carbon foam. Activated carbon foam neutralizes odours and cushions your feet. VARIOUS SIZES: The Kaps Leather Carbon insoles come in a variety of sizes (starting at UK 3 Women's / 36 EUR up to UK 12 Men's / 46 EUR). LEGACY: Crafted by a family business with over 25 years of experience in insoles manufacturing. Best for everyday shoes, casual shoes, elegant shoes and smart shoes. 1 package contains 6 pairs (12 insoles).