Made of food grade natural silica gel, environmental protection, health, non-toxic,Prevent the bottom of the new thermos from being scratched.<br> <br> silicone is very easy to clean, durable, easy to clean.<br> <br> The non-slip function prevents the bottle from falling off the table and also prevents scratches.<br> <br> Durable, easy to clean, safe dishwasher; beautiful, stylish, hygienic, and protective.<br> <br> Material: silicone<br> <br> Color: Color is sent randomly<br> <br> Size: 70mm / 2.76 inches<br> <br> Package includes:<br> <br> 6pcs Silicone Cup Bottom Protective Cover (random colors)<br>