Mens' Durango Maverick XP Ventilated Insulkul Work Boot - Briar Brown and Crimson RedStep into high performance work in the mens 11 Briar Brown Crimson Red Durango Maverick XP. This style features full grain leather with a saddle vamp, the Durango X treme A. C. ventilated shaft, air mesh lining and an InsulKul vamp lining to keep your feet cool all day long. This style also includes the Durango X Pand System, which allows easy access into the boot for those that may have a high arch, the Durango ACS Footbed with InsulKul, a fiberglass