I initially recieved the wrong weight but once I got the correct blanket I was VERY pleased. 
I dont know why these make sleep so much better but they truly work. 
I ordered the 20lb blanket- I wont lie, its hard to fold after use because its heavy but its more than worth the struggle. This particular blanket is well made and the weighted beads are quite when they roll around inside the blanket. 
Try this out- its WELL WORTH THE MONEY!