The Summer Infant SwaddlePod™ was developed together with leading safe sleep experts. The SwaddlePod is ideal for very young infants in that it creates a cozy womb like feeling for baby and helps prevent baby from startling himself awake. Simple and easy to use, just zip baby into pod. The soft, comfortable spandex cotton blend stretches with baby's movements for comfort. The two-way zipper allows for quick diaper changes.