Powerful double layer filter system Actual 100% airtight structure Double mesh 304 food grade stainless steel filter Advanced filtration for Cold Brew Coffee & Tea Perfect gift for coffee/tea lovers Improved 15-micron multi-layer filtration - Powerful double-layer filtration system; 99.99% of coffee grounds can be effectively filtered. With a filtration accuracy of 15 microns, even the smallest coffee grounds are filtered, giving you an extra clean and smooth taste The conventional and ineffective single layer filter has large filter holes, coffee grounds get into your coffee, which tastes and feels bad. Actual 100% airtight structure - you can hold it upside down and the coffee won't drip. The airtight structure locks in the flavour for up to 2 weeks and completely isolates your brew from the fridge smell. Outstanding Features - Double mesh food grade 304 stainless steel filter (no coffee grounds will flow out of the filter into your coffee); 3mm thick high borosilicate glass, temperature differential range: > 165C (you can take it out of the freezer and pour it directly into 100C boiling water); Easy pour spout; Strong handle design. Fit into the side door of the fridge - Just fit into the side door of the fridge. Advanced Filtration for Cold Brew Coffee & Tea - Advanced 15 micron filter Cold Brew Brewer is designed to prepare clean, great tasting Cold Brew Coffee. Beautiful gift box - A gift that will be used every day!The Cold Brew coffee maker is a perfect gift for coffee/tea lovers, housewarming parties, weddings, birthdays and healthy foodies.Your family and friends will enjoy creating the perfect taste , saving time and money.