This is the men's 12 Western Acorn/Black Onyx Durango Rebel Pro style.This style is a full-grain leather with a soft mesh lining inside and has the Durango X-Pand System which is a hidden gore expansion for universal fit and easy on-off. This style contains a comfortable 7-layer comfort system.The first layer is the Durango X-Treme Comfort Footbed with memory foam for all day comfort and support.The second layer is an Eva cushion layer that contours and molds to your foot.The third layer is a ¾ genuine welt construction and a genuine leather welt with double row cotton stitch.The fourth layer is a two-layer innersole with a flexible full-length bottom and stabilizing rigid ¾ heel tuck.The fifth layer is the patented Dually Shank System which contains two fiberglass shanks for medial and lateral torsion stability and midfoot support. The littleway stitch binds the outsole, heel tuck, and upper for absolute durability.