Y-3 Yohji Yamamoto Packable Backpack in Black. Y-3 Yohji Yamamoto Packable Backpack in Black. Poly fabric exterior and lining. Adjustable shoulder straps. Zip front and roll top closure. Front zipper pockets. Waist strap with buckle closure. Measures approx 18 W x 30 H x 5 D. Y-MY15. AZ8750. Founded in 2001, Y-3 symbolizes the merging of Yohji Yamamoto, an avant-garde Japanese fashion designer, and international sporting brand adidas. Even the name suggests partnership: The Y stands for Yamamoto, the 3 represents adidas' iconic triple stripe, and the dash signifies their link. Yamamoto's signature designs are fused with a classic sports aesthetic to produce a new genre of sportswear. In this collection track suits are tailored, hoodies are fitted, and adidas' three stripes do more than accent.