Extra-warm insole with aluminium layer for protection against the cold. Top made from wool felt for warm and snug feet. The soft intermediate layer made for optimum cushioning. Bottom made of aluminium for effective protection against the cold, anti-slip coating for firm support and stability in the shoes.
Top: wool felt, weight 250gr/m²
Middle layer: Polyurethane foam 3mm thick
Under layer: aluminium with anti-slip coating