This is a "one size fits all". Apparently I, a healthy weighted man, am not part of the all. If you're on the skinny side or a slim body with little to no chest don't bother buying this product. It will not fit you. Unfortunately I'll be sending it back because this product does not fit "all". I'm sure it only fits the kinds of guys they like to photograph. I love the underwear I got, but this harness was not worth the money.