The Asobu portable 2 in one cold brewer is the only brewer that doesnt need to be refrigerator at all making it the most convenient option in the market. The brewing carafe is constructed from 100% Bpa free non-breakable Tritan with a reusable and easy to clean 18/8 rust-free superfine stainless steel mesh to give the purest smoothest coffee brew. The take on the go 34oz mug is made with copper double-walled vacuum insulation so your brew will keep cold or hot for hours. With a 6 servings capacity, the brew can be left in the fridge for up to 2 weeks and still get that same great rich and fresh concentrate. Tea lovers, we havent forgotten about you! Our fine mesh works amazing with loose leaf tea as well so you too can enjoy a nice hot cup of steeped tea on the go.