Unique Design: Perfect gift for Meteorology Enthusiasts on Christmas Day and Birthday. High Quality - 18/8 (304) stainless steel, eco-friendly and non-toxic. Double Wall Vacuum Insulated - Keeps drinks cold 9 hours, hot 3 hours. 20oz/590ml capacity is suitable for virtually any type of drink with enough room for plenty of ice too. Spill-Proof - The clear lid seals tightly with a rubber seal gasket while allowing you to see inside. The straw friendly opening can be covered with a flip closure to prevent spill. Onebttl Weather Meteorology Gifts for Weatherman, Weather Enthusiasts, Storm Tornado Chaser, Tumbler Travel Coffee Mug, Stainless Steel Insulated with Lid and Straw, 20oz/590ml - Forecast