MATERIAL -95% polyester and 5% spandex. Designed to be soft and delicate on your baby's skin, and will keep your baby cozy and comfy. Our Recommended Indoor Temperature for Wear: Not Exceeding 24℃/75℉ AGE RECOMMEND -Measure Length at around 70cm and recommend newborn girl or newborn boy for 0-3 month. NO-FUSS NAPPY CHANGES - Undo the bottom knot in seconds for hassle-free diaper changes. No more fiddling with zippers or snaps at midnight. Quicker diaper change leads to a sweet quite baby and a happier mummy. DETAIL-DESIGNS ALL AROUND -On both shoulder part, the flexible neckline is easy for dressing; the well-knitted cuffs cares about your baby’s safety and protect them from scratches. VARIOUS OCCASIONS USE -This sleeper gown can be a hospital coming home outfit or sleep pajamas.It also suitable for photography props, take out, baby shower gift ect. baby sleeper gown