Let me introduce you to TAION , a Japanese brand new to Fat Buddha. A brand on a mission to create the best inner down wear made from a high quality materials with a focus on function and form. Each TAION liner features a fill of 90% mature waterfowl feather down and 10% 650 fill feather working in conjunction with the 100% Water-repellent, high-density nylon outer with water-repellent finish. Also a fun fact, TAION means body temperature in Japanese. Can be worn under a jacket or under a jacket, of course. I would recommend you to size up. To view our full collection of TAION Clothing, press here. Taion Button Down Vest Black Outer Material: 100% Nylon Lining: 100% Polyester Down 90% Feather 10% V Neck Cut Snap Front Closure 2 Zip Side Pockets Packable into Travel Bag Water-Repellent Finish Description by: Vik