Perfect for taking any beverage of choice on the go, the MiiR white 32 oz. Howler is as useful as it is stylish. Made of double wall stainless steel, it won't sweat, but it will keep its contents at the right temperature for hours and will even lock in carbonation. We love MiiR not only because of their quality and style, but because the company is a '1% For The Planet' Member who dedicates a percentage of its revenue to helping fund projects focused on clean water, a healthy environment, and strong communities.