Cotton Material:96.6% Cotton,3.4% spandex.Soft and comfort,four layers of gauze, breathable and absorbent, will not hurt your cute baby’s delicate skin. Please read the Size Chart carefully in the image or the Specifications in the Product Description before purchasing. The zipper design is easy to put on and off, the split legs are designed, and the length adjustment buckles are arranged on both sides of the legs to adjust the length of the sleeping bag, so that the baby can move more freely. There are dark buckles on the legs, which are convenient for changing diapers and will not disturb your baby’s sleep. Widen the windproof strip, keep out the wind and cold, and avoid the zipper from hitting the baby. Take care of your baby’s health and prevent your baby from catching a cold, so that your baby can sleep warm and comfortable all night, mother can feel at ease. A variety of cute cartoon prints, suitable for both Baby boys and girls, make your precious baby look more lovely and make your baby grow stronger.