We looked everywhere and finally found the perfect fabric - it's a lightweight, breathable, European silk blend that provides warmth when it's cold and keeps you cool in the heat. Our Shelf Bra Top is designed to be fitted but not too tight, so you can wear it alone or as a base layer, and it features a built-in bralette for gentle support. Plus it's OEKO-TEX certified free from potentially-harmful toxins, so you can feel safe wearing it every day.