About this item HEAT-RESISTANT SAFE MATERIAL: high boron glass material, can withstand the instantaneous temperature difference from -4°F to 302°F without bursting. Food-grade silicone lid, airtight and leak-proof DOUBLE-LAYER 304 STAINLESS STEEL FILTER: tight and fine stainless steel filter, can easily filter out coffee grounds, fine and no residue COLD BREW COFFEE:Cold brew slows down the deterioration of your coffee. You can pop the water bottle in the freezer anytime for an instant, cool, delicious, refreshing feast. It can also be used for hot tea, hot coffee, juice filter or just as a water bottle. EASY TO CLEAN:The large-diameter glass jug body is easier to clean the coffee residue inside the glass, we give you a long cleaning brush, and the filter can be easily rinsed with water UNIQUE DESIGN: Bincoo cold brew coffee maker is a rectangular pot body, allowing it to be placed on the side of the refrigerator compartment or refrigerator door