windlass system, patented free-moving internal band providing true circumferential pressure to extremity. Adequately tightened, bleeding will cease & windlass is locked into place. Hook & loop windlass retention strap then applied, securing windlass maintaining pressure during casualty #30-001-Tactical Black #30-0057-Cat Holder #30-023-Rescue Orange #30-033-Trainer Blue Latex Free UNSPSC#41104104