Material: Food Grade Silicone . Easy to clean. Brighten up your day with our kitty cat Tea Infusers, guaranteed to make you smile with a cute and hilarious kitty shaped infuser. Great gift idea or perfect to spark a conversation around the water cooler in the office at work. Sometimes you’re in a rush and can’t boil a pot for your tea. No problem with this fully functional tea infuser is safe to use in your microwave, so brewing your tea can be done in no time at all.