COOLShot is an innovative numbing device that gives you a pain-free way to deliver insulin, injections and lancets to your pet. It uses a drug free, medical grade gel called Cellusize that chills your pet's skin which temporarily numbs the tissue. The solution is self-contained behind a metal barrier and never comes into direct contact with your pet. Just hold the COOLShot to the planned injection site for 20 seconds or until the are becomes numb. No more dreading the needle.