The SwaddlePod is the award-winning #1 swaddler recommended by pediatricians. Developed together with leading safe sleep experts, the SwaddlePod creates a cozy womb-like feeling for baby and helps prevent baby from startling himself awake. Simple and easy to use, just zip baby in and he'll be snug as a bug. The soft, comfortable spandex cotton blend stretches with baby's movements for comfort while keeping him secure. Convenient for parents, a two-way zipper allows for quick diaper changes. Specifications: Small/Medium Size: 0-3 months, 5-10 pounds