This was a decently designed vac-u-loc style harness, but its size does have some limits. It is very easy to use if it does fit. It is, fortunately, a great beginner harness and dildo for those looking to get into this style of play. At its smallest size this harness measures about 30 inches, and at its largest size, it measures about 42 inches around. So not really one size fits all.

If it does happen to fit and you can get strapped in all nice and comfy, then with a vac-u-lock toy attached, performance is only limited by the rest of the crafted vinyl and elastic materials. Not having a chance for my wife to try ours out yet, I cannot give a definitive answer on that.