The Baby Sleep Bundle include the Happiest Baby White Noise CD and a SwaddleDesigns Marquisette Swaddling Blanket.  Dr. Karp engineered the sounds to trigger the "calming reflex" a relative off-switch for crying and on-switch for sleep all babies are born with.  The White Noise CD will help improve sleep and help calm baby.  The SwaddleDesigns Marquisette Swaddling Blanket is a very lightweight, premium, open weave, breathable, 100% cotton blanket – appropriate for warmer climates and environments. Open weave design increases airflow and breathability.  SwaddleDesigns comfy marquisette swaddling blankets are much larger than typical receiving blankets and square in shape. The generous size makes it a great privacy throw when breastfeeding, play mat for tummy time and a shield over the stroller to protect from the sun or cool breeze. Babies do not come with instructions, but SwaddleDesigns blankets do – the 123 Swaddle label – easy to follow pictorial swaddling instructions – sewn to the edge of each blanket – makes it easy to learn how to swaddle. Recommended by pediatricians, nurses, doulas, and newborn care educators. 46”x46” Machine wash. Imported. Designed & packaged in the USA.