The Miracle Blanket makes it easy to get the perfect swaddle everytime, even in the dark and won’t unravel during restless sleep. This 100% cotton knit Miracle Blanket helps baby to sleep better, deeper and longer. It has just enough stretch to absorb your baby’s movements without coming undone but it’s not so stretchy that it won’t stay tight; And, most importantly, it stands up to constant use and washing. Like any baby fabric, it should be washed in the cold cycle and dried on the delicate cycle. The Amazing Miracle Blanket Uses No Knots, Buttons, Straps, Velcro,Snaps, Zippers or other Confusing Adjustments. One Size Fits All Babies up to Four Months!