【Safe Material】: Unlike ordinary glass and plastic products, the Beowanzk cold brew coffee maker is made of lead-free borosilicate glass, contains no toxic chemicals, is safer and more environmentally friendly, and can help you make pure and delicious cold brew espresso. 【Double Filter】: The iced coffee maker uses food-grade 304 stainless steel double filtration, which can effectively filter 99.99% of coffee grounds, even the smallest coffee grounds can be filtered, allowing you to taste cleaner and smoother coffee, and the taste and aroma will be better than the traditional and inefficient single-layer filtration. 【Better Sealing】: The stainless steel lid of the cold brew coffee pitcher is made with brushed technology and equipped with a high-strength sealing silicone ring, which makes the pitcher more airtight, can be inverted, coffee will not drip, and refrigerator odors are completely isolated. 【Easy to Clean】: The bottom of the transparent glass coffee maker is not easy to produce dirt, it is very easy to observe the degree of cleanliness, and it has a non-slip silicone base. 【Wide Application】: The cold brew coffee maker is designed to make pure and delicious cold brew coffee, but it can also be widely used to brew various teas, herbal teas, hot teas, hot coffees, juice filters, or just as a kettle.