Hurrah! At last! A versatile and supportive top with coverage. I've swum all strokes in mine (including 100m butterfly) and worn it to run in as well. I took a size M and have a M&S 34E top. The medium has a slightly compressive effect, which is good for swimming and running. (I'd probably run with a sports bra underneath it for longer distances, but it would be fine for beach volley etc without.) I've paired it with a pair of Funkita bottoms, which worked fine. Thanks TYR and Aquaswim supplies!