This baby onesie is super easy to use. Just put it on your little one by opening the bottom poppers. It's designed to fit your baby comfortably. When it comes to cleaning, you can simply throw it in the washing machine, but remember to turn it inside out and use cold water. Then tumble dry it on low. Make sure to keep it away from sharp objects to avoid any tears in the fabric. And since it's made of soft cotton, it might shrink a bit if you use hot water or high - heat drying, so stick to the recommended care instructions.