From Ilse Jacobsen::: "Handmade Chelsea ankle rubber boots. These Wellingtons are made of the finest single-estate natural rubber which is harvested sustainably. This rubber is mixed with our own secret recipe, making the fundamental composition 52% natural rubber and 48% secret recipe. Entirely PVC-free, our rain boots contain no animal by-products. The result is a sturdy and reliable companion for rainy days. We have developed a special anti-ice sole with a rough surface, providing the best possible traction in slippery and icy conditions. These Wellies withstands temperatures down to -20 degrees Celsius."