The Tactical Research QRF Delta B6 Mid-Cut Duty Boot is designed to address the infil & exfil operations of a Quick Reaction Force (QRF) team in mind, The QRF Series of boots offer a unique and purposeful option for when movement is essential. With design and performance influences from the outdoor trekking and approach shoe category, the QRF Series integrates an aggressive, lace-to-toe closure system, a medial side rappelling overlay and low profile soling system to enhance performance in multiple environments.