Bradstreet Ultra Chukka Boots by Timberland Casual and comfortable, the Bradstreet Ultra boots features Timberland\'s new GreenStride™ comfort soles, which are made with 75% renewable sugar cane and responsibly sourced rubber. Crafted from premium full-grain Better Leather, sourced from a sustainable tannery rated for its environmental processes. Featuring a lace-up fastening, finished with a supportive rubber outsole. - GreenStride™ sole made of 75% renewable sugar cane and responsibly sourced rubber - ReBOTL™ fabric lining containing at least 50% recycled plastic - Footbed made with 75% bio-based renewable materials like sugar cane