Love these! I am 58, 150 and 36 B/C and I always order the D size in these as I like the full coverage of the b@@b area when I am wearing a top. I ordered the black and nude. They separate in the middle like a regular bra clasp (plastic) if need be. They have always stayed on well for me but if you have a very voluptuous chest, perspire a LOT, I could see where it may difficult to keep them up I have ordered 4 pairs over the years and just got one in the black and another one in the double-thickness all flesh/silicone covered style from a different vendor. In the summer I almost wear these as it is a no-brained when getting ready in the morning. Def recommend trying these out! See my pics for instructions and product preview. Thanks!