Once a low-key brand, Sacai is now killing it in the hybrid design game, all thanks to Chitose Abe's knack for one-of-a-kind pattern cutting and her fresh spin on usual silhouettes. This vest shakes up the standard gilet, going for a chunky wool knit on the outside. But flip it inside out, and it's a whole different story with a contrast lining and plenty of insulation, all buttoned up with snap buttons on the split sides.