Vegetable tanned leather, double sided with top grain leather on both top and bottom of strap. Adjusts from 47" to 51" in 1" increments with Deco buckle set. Special price for TGP members at $125. Double sided straps are usually priced at $165. and the Deco buckle set is an additional $25. so this is a great price for a strap that you'll have a lifetime.