Our signature Zimmi Onesie is a unisex style for the adventurous. A kimono all-in-one inspired style with a high neck and full zip closure on the front. Made from a premium recycled blend of nylon and elastane, is chlorine resistant and has a UPF 50+ rating. Designed to fit snug against your child’s body. We recommend choosing a size closest to your child’s age. If your child is between sizes, go up a size to ensure they will grow with their swimsuit.