Crafted from temperature safe borosilicate glass while utilizing a stainless steel mesh that doesn't alter the flavor, our Cold Brew Glass Coffee Maker is an ideal and innovative solution for brewing refreshing, chilled coffee. It produces coffee that's up to 65% less acidic and naturally sweeter than any heat brewed variety, making it the perfect accouterment for creating rich, smooth and icy cold cups of coffee to jolt you awake in the morning or to make it through those long summer days. Best of all, the Primula Cold Brew Glass Coffee Maker and its contents can easily be stored away in a refrigerator or freezer for up to 2 weeks without losing any flavor. It also conveniently fits in most refrigerator doors. Get brewing.