Amazon workout set! I sized up to a medium for comfort—it’s VERY stretchy. If you want it tight/more supportive I would not size up. It isn’t see through at all will say in certain lighting the material shows everything if your backside is not perfectly toned (I speak from personal experience 🤣) so I probably would’ve gone with a darker color in retrospect! But I also don’t care that much and love the color of the blue!