Originals Ultra Shoes - winter boots by Timberland. Timberland's new-look Originals Ultra men's boot features the new GreenStride comfort sole, made from 75 % natural sugar cane and tree-derived rubber. The high-quality Better Leather comes from a sustainable tannery with a silver rating for its environmental processes. The TimberDry membrane provides reliable waterproof protection and is made from at least 50 % recycled plastic from landfills.