All you need is ground coffee, clean water, and 8 to 12 hours in the refrigerator. Ahhh. Mouthwatering, thirst-quenching, ridiculously-easy-to-make cold brew. Make a batch the night before. In the morning: great coffee, ready to go. Up your iced coffee game with this all-in-one system from Hario in Japan. Choose from grey or classic blue. Best part? The ultrafine filter makes crystal clear cold brew a sure thing, every time. Bonus: easily remove filter to transform bottle into a stunning carafe for any beverage. MATERIALS: GLASS, SILICONE RUBBER, POLYPROPYLENE, POLYESTER CAPACITY: 750 ML (MAKES 590 ML OF COLD BREW) CARE: BOTTLE IS DISHWASHER-SAFE. HAND-WASH FILTER. Full product details: https://bluebottlecoffee.com/us/eng/product/hario-cold-brew-bottle