Woly warm active 3d insoles one pair size uk 3 euro 36 warming footbed with insulating aluminium layers soft fleece top layer for warmth whilst the memory foam middle layer allows the insole to mould around the foot for stability the aluminium bottom layer protects against moisture and the cold with added cushioning to the heel and foot along with elasticated orange parts to the sides allows for firm support to the foot allowing relief to joints and ligaments