These fast flow teats are designed with a dimpled textured surface that helps support breast feeding. They're suitable to use with our Wilko standard neck bottles as well as most other branded standard neck bottles. The teats are also available in a medium flow rate to suit your needs. 100% BPA free.Suitable for ages 6+ months. Complies with EN 14350. Wash and sterilise before use. Never leave infant unsupervised when bottle feeding. When not in use keep out of reach of children. Always read instructions.