Really cool belts. These harnesses are actually an improvement over the standard harness we've all had for decades. They lock in a special way and release in a special way. They are very easy to use, very handy when you need to unbuckle the strap because you may have eaten too much it's very easy to do and nobody gets the wiser. I really like them and I gave them to five different cousins for Christmas and they all love them too.