Gravity is the only weighted blanket scientifically proven to improve sleep quality by an independent study of 1,000 nights of sleep (SleepScore). 76% of people using the Gravity Blanket reported falling asleep faster and feeling more rested upon waking up in the morning. 72% of participants reported better, more restful sleep. 54.7% reported feeling less anxious and stressed from using the Gravity Blanket. Features a premium micro-plush duvet cover and an inner weighted piece containing fine-grade glass beads. Precise gridded stitching ensures the glass beads remain uniformly distributed, providing comfort, no matter how you use your weighted blanket. The weighted inner is secured to the duvet cover via ties and elastic-button connectors and with our upgraded zipper fastening system. Cover is machine washable (wash in cold water, tumble dry on low), while the inner weighted blanket is hand-wash-only and air dry.