In the face of freezing temperatures and icy rain, warmth often (rightfully) trumps style considerations. Thankfully, Japanese designer Tsuyumi Kumazaki’s eponymous line of thick-knit hats, slouchy wool fedoras, and fur-lined caps blends the best of both worlds. Tsuyumi grew up making hats and clothes for herself and friends. She attended Tokyo Bunka Fashion College — the alma mater of distinguished alums like Yohji Yamamoto and Tsumori Chisato — where she took courses in knitting and millinery. Upon graduating, she launched her collection in 2005, translating her design philosophy (in a word, “garnish,” she says) into funky, functional headwear. Each hat is hand-knit or crocheted, often trimmed with vintage fabric or buttons. She focuses on high-quality materials, including super-wash wool, organic cotton, cashmere, alpaca, and angora; even the simplest beanie styles incorporate chunky yarns for extra warmth. The fall/winter collection is available at Bird, Steven Alan, Catbird, Arth, and more. Click ahead to check out more of her giftable toppers.