【Safe To Use】The silicone baby bottle cover is made of food-grade silicone, soft and comfortable to the touch, BPA-free, providing the safest care for your baby. 【Avoid Being Scalded】Silicone Baby Bottle Sleeves help insulate glass bottles. The Silicone Baby Bottle Holder is not only convenient for adults to hold comfortably, but also helps babies hold the cup firmly when trying to drink water on their own. 【Reduce The Risk Of Breakage】The striped design on the bottom of the silicone sleeve provides extra protection against drops and impacts. Even if accidentally dropped, the Glass Milk Bottle can be protected from scratches or even broken. 【Side Visual Design】Makes the remaining amount of milk visible at a glance, making it easy for parents to accurately grasp and reasonably plan the amount of baby's food intake. 【Applicable Models】This Baby Bottle Holder is only compatible with Philips AVENT Glass Natural Baby Bottle 4/8 oz. (Not suitable for other series)