I've loved Calida brand for years and used to buy Calida from another online retailer (until that retailer was bought out and no longer carries them). For those of you who don't know, Calida is a Swiss company that makes the most comfy and high-quality undies and nightgowns, and they are usually very pricey, but their stuff is worth it. I'm a size 12 or 14, and for me, the Calida "small" size is perfect. This is a solid, yet lightweight and thin, cotton undies that will keep you cool in the summer under your summer dresses. I'm so glad to find this on Amazon!