Kazuyuki Kumagai showed his namesake collection in Paris back in the '90s before his involvement with Attachment. He's back to designing under his name again for the menswear brand, and is still heavily influenced by legendary designer Issey Miyake. Kumagai focused on sharp tailoring and craftsmanship for his spring/summer 2013 collection which is full of activewear and casual clothing done up in tech fabrics, as well as fabrics you'd see in more formal clothing.