These lingerie are very comfortable, ideal for the gym and every day. It absorbs moisture, so does not absorb sweat and keeps the body dry. The best thing about them is that they don't have seams on the seat/back of the legs like most other athletic boxers. This means they don't dig into the skin at all. They lift a bit on the feet but stay in place for the most part and are fairly flattering. My waist is about 32-33 inches. I usually wear 31W pants and they fit me snugly in M. They are quite tight but have a lot of stretch and are quite comfortable. Just updating my review to add that I wouldn't recommend these in hot weather (80F or more), they are too tight for that and don't have enough mesh to breathe around the foot. I don't usually find them too flashy, but in warm weather they are a bit uncomfortable. I think UA makes a mesh version that would be way better. In hot weather I prefer Pair of Thieves Superfit mesh underwear, but boxers are still good. I just think I would go for the mesh version if I were to buy it again. I also wonder if the shorter length would make them more comfortable in warmer weather.