Marketed as a long distance tri suit but that’s just because it is a two piece - which is designed to make toilet stops more convenient (i.e. you don’t have to remove the full tri suit like you would with a one piece suit). It has gel pockets in the outside of the legs and in the back of the top part. Used once a few years ago. Great condition. I’m a slim 5’11 74 kg and it was a good tight fit. From a pet and smoke free home. I have one in large too. Not a lot between sizes medium and large.