The Feeding Bottle Cover is specially designed as a help to the parents who are always on the go. The cover can easily be put on and off if you just wet the bottle completely. The cover comes with markings on it so you will not overfeed your baby. The covers are made of 100% food grade, safe, colorful, and heat sensitive silicon - lets you know instantly if the milk for your baby is too hot making bottle feeding a breeze for you and your baby. Compatible with most major brand standard neck glass bottles available in the market, the sleeve creates a protective layer helping the glass bottles withstand shocks from drops and knocks, giving you peace of mind and a bottle that will last for a long time.