About This WINTERWEIGHT: Hypoallergenic PrimaLoft Luxury Down Alternative fill mimics the weight and gentle loft of down. Choose from three weights to suit your ideal sleep temperature. Available in Full/Queen and King/California King sizes 100% ORGANIC COTTON SHELL: Made from premium long-staple 100% certified organic cotton in a breathable weave; Boll & Branch thread quality is unmatched, its purity preserved from seed to finish without the use of harsh chemicals UNIQUE CONSTRUCTION: Each duvet insert has a bafflebox construction that keeps the right amount of fill perfectly in place to maintain shape and loft; 4 corner loops secure to interior ties on Boll & Branch duvet sets EASY CARE DESIGN: Machine wash your Boll & Branch duvet insert alone in cold water once every season; tumble dry on low—it may take a few cycles—and add wool dryer balls to keep them fluffy SLEEP BETTER AT NIGHT: Boll & Branch does business differently; each product is cultivated from the finest seed, free from toxins at every step, traceable from farm to finish, and Fair Trade Certified Overview Material : Cotton Color : Ultraweight Brand : BOLL & BRANCH Special Feature : Breathable Style : Modern