These TBL Originals Ultra EK men's boots by Timberland feature waterproof protection, warm insulation, and environmental responsibility from top to toe. Our TimberDry technology reimagines waterproofing with a membrane made of 50% recycled plastic bottles. Ultra comfort is built in with our GreenStride soles made of 75% renewable materials, including sugar cane and responsible rubber. You can also take comfort in responsibly sourced leather, wool, and linings.