RUB Boots These boots are made of sustainably harvested natural rubber and have been cut by hand. This material can withstand temperatures down to -20 degrees 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. This is simply because the rubber loses its essential oil. To keep your boots in great condition for many years to come, we recommend that you treat them once a month with our oil. RUB 01 RUB 15 RUB 02 RUB 30C RUB 47 Buying Options Buying Options Buying Options Buying Options Buying Options Customer Reviews 4.3 out of 5 stars 284 4.3 out of 5 stars 75 4.0 out of 5 stars 90 3.9 out of 5 stars 8 4.3 out of 5 stars 59 Price $170.21$170.21 $164.73$164.73 $159.25$159.25 — no data $164.73$164.73 Height Knee High Mid Calf Ankle Ankle Ankle Lace-Up ✓ ✓ ✓ no data no data Slip-On no data no data no data ✓ ✓ Waterproof ✓ ✓ ✓ ✓ ✓