Men's Durango Maverick XP 11" Western Boot Cowboy Boots This style is full-grain leather with a ventilated shaft and air mesh lining to promote maximum air flow. It has the X-Pand System which is a hidden gore expansion on the inside medial seam for a universal fit and easy on/off and the Durango X-Treme Comfort footed with Memory Foam for all day comfort and support. Fiberglass shank for lightweight stability and a dual-density midsole with firmer shock absorbing heel for added stability and a soft shock absorbing heel for added stability and a soft shock absorbing forepart for ultimate flexibility and comfort.