The material is very smooth, thin and has a little stretch. I like how thin the material is because it enhances everything. The underwear seem delicate but they are holding up well so far. The straps are actually adjustable and not just for show. I ordered an XL and I’d say they run a little smaller than some brands (think European sizes). So, they don’t actually cover my butt (I am 6ft 200lbs lean). I have to wedge them a little to make it work, but that’s just styling. The pouch is a little tight, but the fabric is stretchy enough to accommodate. Overall, I enjoy wearing them and they are very flattering. I will order more. If I made 1 change, I would make the pouch more like the liquid posing suit pouch.