Emerald Bay Insulated Tumbler. Show your love for Mother Earth when you minimize your waste with the help of this reusable tumbler boasting an insulated design that keeps drinks cold for up to 20 hours or hot for up to four. 3.5'' W x 9.85'' H x 3.08'' diameter. Stainless steel. Hand wash. BPA-free. Climate Lock double-wall vacuum insulation. Imported.