Asobu Coldbrew Insulated Portable 40oz Brewer is first of its kind in the cold brew market with a worldwide patent. Forget about diluted, bitter, and acidic standard iced coffee this brewer gives you that amazing freshly brewed coffee every time. Made with copper lining, double-walled 18/8 stainless steel and the brewing carafe is 100% Bpa free non-breakable Tritan with a reusable and easy to clean rust-free superfine stainless-steel mesh to give the smoothest coffee brew.