Now your most restful sleep is also your most luxurious. This new sleep mask is also sizeless, which makes it the perfect gift for the fancy sleepers in your life. 100% real silk — that you can throw in the wash. (Finally.) Say goodbye to your dry cleaning bill now. Plus, it's hypoallergenic, sand-washed for softness, and helps control body temps. That means it keeps you cool when it's warm, and warm when it's cool.