Brand New Sleepgram King Size White Duvet Cover Duvet cover made from 100 percent long-staple cotton in a sateen weave offers genuine 400 thread count, delivering a truly opulent feel and uncompromised comfort Real silver woven into the fabric with a patented process provides a 99.9 percent cleanliness effect, ensuring a refreshing sleep environment 2 to 3 times longer than traditional bedding; Silvadur technology provides an additional layer of protection against irritants and contributes to cleaner skin Machine washable on warm in a gentle cycle and tumble dry low for ultimate convenience and freshness use after use Features zippers and ties as closing mechanisms that stay discreet while perfectly holding the comforter in place Duvet cover comes with a travel bag for convenience on the go, ensuring you can enjoy the benefits of restful sleep wherever you lay your head