Asobu Cold brew Portable Cold Brew Coffee Maker 40oz is first of its kind. True to its name Asobu has taken cold brew to the next level, as Asobu always will do Cold brew on the go a portable and vacuum insulated way to brew coffee. Cold brew is the next generation of the typical iced coffee. Using hot water on your coffee granules creates a more acidic bitter drink while using cold water with coffee and allowing it to steep as with the Asobu cold brew creates 80% lower acidity, deeper and smoother, naturally sweet taste and also gives it that extra punch of caffeine. Not having any heat in the process also preserves antioxidants making the cold brew coffee a healthier more natural choice. Asobu portable 2 in one cold brewer is the only brewer that doesn’t need to be refrigerated 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 double wall stainless steel mesh to give the purest smoothest coffee brew. The take on the go 40oz mug is made with copper double walled vacuum insulation so your brew will keep cold and hot for hours. Our brewer and mug is compatible for hot coffee as well. Asobu Brewer hold 6 servings so leave in the fridge for up to 2 weeks and still get that same great rich and fresh concentrate.