ღ 【Food Grade Safe Material】: Silicone bottle cover is made of food grade silicone, BPA free, no chemical additives, safe to use. ღ 【Anti-drop and anti-slip】: Prevent collision and scratch. This is a must-have for anyone who uses glass bottles. They provide sturdier protection against falling and breaking the bottle, and also make it easier to grip the bottle. ღ 【Good insulation and heat retention】: Silicone bottle holders also help insulate glass bottles, make it easy to remove them from the heater, and keep the milk warmer for longer than regular bottles. ღ 【Dishwasher and Steriliser Safe】: These bottle holders are dishwasher and steriliser safe, and the high quality silicone material ensures long term use. ღ 【Applicable Models】:This bottle holder is compatible with AVENT Glass Natural Baby Bottles 4 / 8 oz. (Other series are not applicable)