The Coccoli Modal Zipper Flowers footie features a clever 2-way zipper hidden under an inner placket for ease of dressing from neck to foot. Sizes N (newborn) and 1 month include mitten cuffs to protect baby's delicate skin, while sizes 3 months to 18 months have anti-slip features under the feet. A soft elastic at the back of the foot keeps them securely in place. Sizes 12m and 18m have a snug fit, and no harmful flame retardant chemicals are used. Made with sustainable materials, including organic cotton and TENCEL™ modal, this footie is both cute and conscientious.