Tommee Tippee Anti-Colic+ 260ml Vented Bottle is specially designed with a super sensitive valve, advanced easi-vent technology and optimum venting during feeding to help prevent colic. Using the bottle is simple - just check the heat sensing tube and ensure it is blue (safe to feed). If it has changed to pink, the milk is warmer than the recommended 37°C. With such a clear and helpful innovation, your concerns of accidentally serving milk that is too hot can be put to ease! The Anti-Colic Plus teat also has a unique, easy latch on shape with soft natural feel silicone, making it easy and natural for your baby's usage.