These handmade minimalistic rubber boots can withstand even the hardest torrential downpour. Ilse Jacobsen have chosen to make our rubber boots of the finest single-estate natural rubber from sustainable harvests. This pure, natural rubber is mixed with our own secret recipe, making the fundamental composition 52% pure, natural rubber and 48% secret recipe. Entirely PVC-free, our boots contain no animal by-products. The result is a sturdy and reliable companion for rainy days. To make sure that your feet stay dry and comfortable, they have lined this edition with a special summer lining made of 60% cotton and 40% polyester. In addition to this, they have placed comfortable soles in them, made of 60% cotton and 40% polyester. They have developed a special anti-ice sole that has a rough surface, providing the best possible traction in slippery and icy conditions. The cold won't ruin your rubber boots either - our soles are made of lightweight EVA, withstanding temperatures down to -40 ° C.