Think of this as the perfect warm-weather sweateru0026mdash;or like an extra-special T-shirt. Either way, it’s one of our new favorite styles for both work (under a blazer) and weekend (with jeans). It’s made from a lightweight, drapey fabric with a compact knitu0026mdash;so it’s super-breathable, but never see-through. What is this miracle material? It’s a blend of TENCELu0026trade; lyocell, an eco-friendly fiber produced from wood pulp that’s sourced from sustainably managed and certified forests (meaning not ancient or endangered).