????Premium Cold Brew Coffee Maker : The cold brew coffee maker is made of premium heat-resistant borosilicate glass and food grade, BPA free thicken plastic pour spout lid, durable and leak proof. ????Leak Proof & Airtight Storage : The 64 oz large capacity cold brew coffee maker mason jar with food grade silicone seal in the pour spout lid will provide the best air tight, effectly blocks the ordor from refrigerator and ensure the tasty of drinks.