The Award Winning Zen Swaddle is lightly weighted to mimic your soothing touch and aid safe sleep. Simulated touch has been used to calm babies in hospitals for decades. Now the Zen Swaddle brings this proven hospital technique to your homes. Moms report up to 2 hours of extra sleep. The 2-sizes-in-1 design grows with your baby from 0-6 mos. Made from softest 100% cotton, it is washer and dryer safe.