Key Features • Built-in Temperature Control indicator shows when milk is too hot • NUK Orthodontic Teat Shape with distinct soft zone is modelled on a mother's nipple as she breastfeeds leaving baby´s tongue and jaw enough room for natural sucking movements • NUK Anti-Colic Air System minimises infant colic caused by the harmful swallowing of air** • Suitable for combination feeding* - the extra wide lip support simulates breast feeding as closely as possible • BPA-free and durable bottle • Includes Size 1 (0-6m) Silicone Teats with Medium Feed Hole • Wide bottle neck allows for easy filling and cleaning • Pack of 4 NUK First Choice+ baby bottles have an orthodontic shaped teat and super soft zone which simulates the shape of a mother's nipple during breastfeeding. This makes it easier for baby to accept and for mum to alternate between breast and bottle-feeding. The built-in Temperature Control indicator changes colour from blue to white when the bottle's contents are too hot, so you can be sure your baby's milk is always at a comfortable drinking temperature. The natural shape of the NUK teat also perfectly adapts to baby's sensitive palate and helps exercise their jaw and teeth, while the NUK Anti-Colic Air System minimises infant colic caused by the harmful swallowing of air. Each bottle is BPA-free and durable, while the included sealing disc ensures leak-proof transportation. *Scientific study: Moral et al. BMC Pediatrics 2010, 10:6. For more information go to http://nuk.com/research **Independent market research among 205 mothers, Germany 2018. (99% of the mothers confirmed that the NUK First Choice+ Control bottle does not cause colic)