The Timberland Men's Redwood Falls Waterproof Chukka Boots are made with responsibly sourced leathers and an eco-conscious ReBOTL™ fabric lining made with at least 50% recycled plastic. They sport the TimberDry™ waterproof membrane to help keep feet dry, made with 50% PET (recycled plastic bottles). The OrthoLite® comfort foam insoles provide moisture transport, antimicrobial function and long-term cushioning. The ultra-breathable material won't break down or lose cushioning over time, keeping your footwear comfortable and supportive. The Gripstick™ Rubber outsoles provide dependable traction on both wet and dry surfaces, designed for a large amount of surface contact through wide or multiple lugs with square leading edges.