Silicone sleeves: Products name: silicone feeding bottle cases,silicone baby bottle covers: Features and Benefits: Non-toxic,BPA,Lead,PVC and Phthalates Free 100% Food Grade Silicone Ultra cushioning offers extra protection against breakage More hygienic to use than fabric bottle sleeve Smooth,non-porous and non-absorbent surface helps prevent bacterial growth Open-view window allows easy viewing of measurements and contents inside even during middle-of-the-night feeds Keeps heat from transferring from bottle to hands Durable,anti-slip and non-scratch Microwave oven,sterilizer and dishwasher safe Helps to maintain heat for a longer time Comes in different fun colours and styles,and is easy to put on and offExtremely resistant to high heat and breakage Lightest glass baby bottle on the market Anti-colic Soft,wide stretchy nipple mimics breastfedding action,prevent nipple confusionsMicrowave,sterilizer and dishwasher safe Compatible with 100% food grade silicone