Designed in conjunction with breastfeeding experts, the revolutionary new Tommee Tippee Closer to Nature Easi-vent teat mimics the natural flex, movement and softness of a mum's breast, to make switching between breast and bottle easier than ever before.
The unique shape of the Closer to Nature Easi-vent teat encourages your baby's natural feeding action so that switching between breast and bottle becomes second nature.
With its unique Easi-vent anti-colic valve (which you can actually see working) the Closer to Nature Easi-vent teat is at the heart of an entire breastfeeding support system which also includes a breast pump, sterilisers and accessories specially created to help you combine breast and bottle feeding.
Teat collapse resolution
There are two reasons a teat may collapse. One is an indication that your baby is ready for a faster flowing teat and may be sucking so hard that the teats can not release the air fast enough and collapses. The other is that the Closer to Nature Easivent teats are made from very soft silicone, therefore over time the silicone can remould when not in use, for example when on the shelf in store.
You will have noticed a small tent-like vent on the inside of the teat this should have a small slit along which allows the airflow through the bottle, and if this remoulds it will cause the teat to collapse during a feed. Please see the diagram below that may help, which is also highlighted on the front of the instructions.
All you need to do to rectify this problem is to rub the valve between your finger and thumb until the slit re-opens. You will only need to do this once and the teat should then function as normal.