5 oz. bottles with slow flow nipple and 9 oz. bottles with medium flow nipple. NUK Simply Natural bottles provides baby with a close-to-mom feel never before found from a bottle. Continue that special breastfeeding bond, even when you can't breastfeed. NUK Simply Natural bottles provides baby with a close-to-mom feel never before found from a bottle. Continue that special breastfeeding bond, even when you can't breastfeed. The comfortably familiar nipple feels, works and moves just like mom's. Two fast flow nipples with 9 nipple holes. Simply Natural nipples have 3 to 9 nipple holes, depending on flow rate and provide a natural and comfortable feed, just like mom's breast. Three NUK Orthodontic silicone pacifiers: one 100% silicone newborn pacifier and two pacifiers with adorable panda face design (6 to 18 months). NUK pacifiers have a truly orthodontic nipple shape that soothes and calms baby better than our original nipple and help promote healthy oral development by naturally fitting into baby's palate.