Hevea's 100% natural rubber wide neck bottle nipple is very soft and has a natural feel that makes it a wonderful addition or transition for breast-fed babies/toddlers to a bottle. The nipple teat is cherry-shaped and ribbed to feel like mum's breast, and an anti-colic valve is designed directly within the nipple to eliminate the need for excessive sucking force helping to protect baby’s sensitive stomach. Moulded from one-piece of rubber which makes it highly hygienic, it is softer than silicone and very resistant to teething/bites. Easy to attach and take off, the design fits tight to the bottle with no leaks.