Dynarex DynaSafety Quick-Release Tourniquets are stretchable bands designed to constrict blood flow from extremities in emergency situations. The convenient tourniquets feature quick-release buckles that instantly loosen with one hand to help prevent pinching, catching, or jamming patient’s hair or skin. Dynarex Quick-Release Tourniquets are lightweight and compact for easy packing in first-aid kits, emergency bags, and ambulances.