I love this design that's inspired by vintage aerobic outfits. It features a gusset crotch so you don't have any seams riding up in an uncomfortable way. This material is ribbed cotton I believe it's a 95 cotton 5% spandex blend because it does have quite a bit of stretch. I finished this with elastic that goes into boxers so that it's nice and comfortable and has a good amount of give to it and it's not too tight.