Top quality full grain leather is used the most technologically advanced Motorcycle Biker boot ever. Good Year Welt Construction boots (needed for long term durability, resole-able, better comfort when wore in). Great classic look of 13 inch harness biker boot. This is the most technologically advanced mens biker boot built for durability, comfort, long-term wearability and protection with a extra heavy duty designer lug sole for added protection and style.