Material The silicone glass cover is made of food grade silicone, they are non-toxic and reusable, so you never have to use plastic wrap. Easy to identify The package contains 8 different silicone glass covers and 8 diamond buttons. The various bright colors ensure that everyone knows whose drink belongs to whom. Drinking glass lid is very suitable for parties, families, one person one color. Keep the mug hygienic and clean The silicone drinking glass lid sticks to the edge of the mug, is dustproof and sealed, keeps flies away, keeps your drinking mugs and coffee mugs hygienic and clean. Stop spilling liquids, even if the cup is tipped. These easy kitchen lids are sturdy and durable, and the soft material is easy to clean, it can be hand cleaned or the dishwasher safe. Reusable and economical With this environmentally friendly silicone lid can be easily cleaned and thus reusable, stretchable silicone lid replaces cling film and aluminum foil, more environmentally friendly. More economy and more convenience.