Hannayoo Works is a Brooklyn-based design brand bringing fashion and art together through ethical design and conscious clothing. Its products are organically handcrafted with attention to the character of their materials, and include luxury knitwear, sustainable cashmere sweaters, and custom jewelry made in the United States. The H+ line extends this approach beyond clothing to artistic objects, images, and books, encouraging creative exchange between the designer and customers and welcoming contributions from other makers.

Hannayoo Works offers a broad range of knitwear and accessories, including pullovers, cardigans, vests, dresses, hoodies, capes, scarves, beanies, and bandanas. Its apparel comes in varied colors and styles, with selected pieces available for pre-order. The brand also features handcrafted air-dry clay earrings and gift cards. To support its goal of creating what is needed and wanted while reducing waste, H+ produces items made to order or through pre-orders; some creations may be one-of-a-kind. Hannayoo Works presents its work as a way to wear, use, enjoy, and share thoughtfully made pieces.