The Clever Coffee Dripper combines the best features of French press and filter drip brewing. This large 18-ounce design features more durable plastic, and is easy to disassemble for cleaning. Like all filtercone brewing methods, you directly control the temperature of the water, ratio of water and coffee and infusion time, eliminating the drawbacks of each. The dripper will fit on cups and thermoses with tops between 1.5" and 3.75" in diameter. BPA-Free Plastic. Not dishwasher or microwave safe.