Easy to Use - The RATS (Rapid Application Tourniquet System) Tourniquet is easy to learn and us. Simple Design - The design of the tourniquet is very simple, allowing for one handed use in cases where no other assistance is available. Small & Compact - It can be rolled up into a compact size for putting in first aid kits, survival kits, or anywhere you see fit to carry it. Versatile - Its unique design allows for use on all limb sizes, i.e. adults, dogs and children. Tried & Tested - Proven to be effective in occluding blood flow in both upper & lower extremities by the U.S. Army's Institute of Surgical Research.