2-pack of Non-Toxic, Natural Rubber, medium flow cherry-shaped teat, Anti-colic valve and plastic free Plastic-Free. 100% Natural Rubber 0-3 Months Cheery shaped teat – Anti-colic valve Use: Milk and Water One-piece moulded – highly hygienic Soft and durable. Resistant to teething/bites Fits regular neck bottles Cleaning Sterilise in boiling water Do not clean in dishwasher or steamer