Ilse Jacobsen Short Rubber Lace Up Wellington Boots Otter RUB2. Lace-up rain boot with fleece lining and rear pull loop. The iconic laced rubber boots by ILSE JACOBSEN HORNB?K. These ankle rain boots features a decorative D-ring at center back and logo on the shaft. These wellingtons are made of sustainably harvested natural rubber and have been cut by hand. The material can withstand temperatures down to -20? Celsius. The rubber composition is 80% pure, natural rubber and 20% secret formula. Entirely PVC-free, our boots contain no animal by-products. If not treated regularly, natural rubber will develop a white surface over the years. Contrast logo on side. Outer Material: Rubber. Inner Material: Textile. Sole: EVA. Closure: Speed-Laces. Heel Height: 2.5 centimetres. Heel Type: Block Heel. Material Composition: Rubber. Zit Type: Fits Half A Size Larger. Shoe Width: Normal.