Adidas Y-3 Classic Light Down Liner Jacket. Experimenting with the familiar, Y-3 enhances a functional silhouette with uncompromising detail. Wear the Classic Light Down Liner Jacket under a coat for added warmth or layer it on its own for a sleek, utilitarian look and feel. It's crafted of smooth, high-stretch fabric with extra padding. • Material: 80% duck down, 20% feather • GK4580 • • • Yohji Yamamoto and Adidas joined forces in 2003 to create a unique sportswear brand that is a fun, fashion-forward mix of Yamamoto’s outlandish avant-garde spirit and Adidas’s sportswear expertise.