[Innovative Design] The 7-layer system design adapts to the curve of your body for optimal comfort and the 4x4-inch smaller sections allow for more equitable weight distribution. It includes more glass beads and less fiberfill for enhanced temperature regulation. In addition, a three-dimensional lock bead stitching method prevents leaking of beads. It has the finest stitching (0.25mm per stitch) to avoid movement of weight between compartments. All of these attributes make it a superb blanket.[Unique Sleeping Experience] YnM provides a natural means of calming the body for a good night's sleep. It is a wonderful sensory blanket for children to help them relax and feel at ease. Great gifts and love for children.[Sizing Guide] To get the appropriate size for one child, take 10% of the body weight and add 1 pound.[Loops] It has 8 loops for securing the duvet cover (available separately) to prevent slippage.[Easy Care] Machine washable in a gentle setting. Tumble dry on a low setting or line dry. Use a mild detergent and avoid bleach. If you use YnM weighted blanket with a duvet cover, then you can just wash the light weight duvet cover instead of washing the heavy inner weighted blanket.