The labels on our products are produced as a detachable inner label so that babies' sensitive skin doesn't itch, cut, sting or cause discomfort. Zipper closure with a chin guard in the front. They will keep your baby dry and warm on cold and rainy days. Our winter astronaut overalls are made of fleece fabric with a very soft interior, and litter-filled. It is designed with elasticated cuffs on the sleeves and legs, and a protective zipper that does not irritate the chin.