The Tactical Research Khyber series was intended for military and law enforcement professionals looking for an athletically-designed, low profile boot. The Tactical Research TR660 Men’s USAF Khyber Hot Weather Lightweight Mountain Hybrid Boot is an Airman Battle Uniform (ABU) compliant boot for U.S. Air Force uniform wear. This hot weather mountain hybrid boot was specifically designed for all-terrain use and features an agressive tread pattern for climbing walls, crawling, rope rapelling, and running on uneven surfaces. A toe and heel kicker aids in sliding down inclines. A TR-1 premium load bearing orthotic insole supports your foot and prevents fatigue even after long duty hours. From rocky mountainous terrain to hard pounding concrete roads, the Khyber will outperform when tested in any environment. With great design features to add to comfort and durability, such as its lace-to-toe lacing system for a customized fit, the TR660 is a top choice for everyday Air Force duty.