... grade standard FDA/LFGB 3.passed BSCI approve silicone fresh lids,silicone keep fresh covers,silicone food covers-size:dia12/17cm-weight ... 50cm-Material:100% food-grade silicone-lids to keep food fresh and avoid mixed smell, such as vegetable,fruits,meats, ... drinks,etc.-safe for dishwasher,microwave,oven and freezer-stretchable,reusable,waterproof,oil resistance, non-sticke,easy-clean and ...