This men's TBL® Originals Ultra EK+ boot by TIMBERLAND, has an upper crafted from premium Better Leather, which is sourced from a sustainable tannery rated silver for its environmental processes. The boot features waterproof protection from our TimberDry™ technology, which reimagines waterproofing with a membrane made of 50% recycled plastic bottles. Superior comfort is built in with our GreenStride™ soles made from 75% renewable sugar cane and responsibly sourced natural rubber. The warming collar and lining are eco-conscious too, being made with responsibly sourced wool and durable ReBOTL™ fabric containing at least 50% recycled plastic.