Footie's practical hidden 2-way zipper with an inner placket to protect your baby’s skin opens from neck to foot. It has mitten cuffs on sizes N (newborn) and 1 month to prevent scratching, and has an anti-slip feature under the feet on sizes 3 months to 18 months. The back of the foot has a soft elastic to ensure that baby’s foot stays where it belongs! The fit is snug on sizes 3m and 9m, and no flame retardant chemicals are used. The fabric is the softest TENCEL™modal which is not only lightweight, breathable and hypoallergenic, its production process is sustainable, helping to minimize environmental impact. Care Instructions: Wash inside out, Wash separately in cold water, Tumble dry low.