Materials: 43% Lenzing Ecovero™, 35% nylon, 22% polyesterHook and eye front closureDesigned to wear alone, not layered. Not "bra-friendly"Lenzing Ecovero™ are viscose fibers derived from sustainable wood and pulp, coming from certified and controlled sources. It is free of harmful substances and the manufacturing cycle has been optimized to drastically reduce the environmental impact compared to traditional viscoseManufactured in a production plant installed with solar and wastewater treatment systems to reduce environmental impact; Global Recycled Standard (GRS)Factory is Higg FEM certified, which ensures they measure and quantify the sustainability impacts of their facilityMade with care in Shanghai, ChinaSoft Hand FeelExpert CraftsmanshipGRS Certified Fabric Eco-Knit Split Front Sweater Vest