The Belleville 633 Sabre was designed to be a low-profile, ABU Approved boot for intense physical activity. It features a design that wraps around the foot for maximum grip while climbing, rappelling, or crawling. The Vibram Ibex is provides an aggressively ribbed tread pattern for max performance on both loose and solid surfaces. The Sabre features instep vents for excellent ventilation to keep your feet cool while engaging in physical activity or while in hot environments. This boot is intended for troops looking for a lightweight, low profile, tactical boot for use in urban and outdoor environments. This boot is Air Force Airman Battle Uniform (ABU) approved and Berry Compliant.