Size:20-Ounce Color:Black Stainless Steel vacuum flask: The high-quality double-layer stainless steel vacuum insulation structure enables the stainless steel vacuum flask to keep the temperature of hot and cold drinks for several hours. The flip-top lid with a safety lock makes drinking more convenient and prevents drinks from overflowing. 1-5/8 inch (4 cm) wide diameter. In addition to the original flip cap, an optional flat screw cap (sold separately) can be added for easy sipping. Lightweight and compact design. The easy-to-clean double non-stick coating liner improves the durability of the product and protects the stainless steel from corrosion by salty drinks such as sports drinks. Specifications: Capacity: 20 oz. / 0.60 liter. Dimensions (W x D x H): 2-3/4 x 2-7/8 x 10-1/4 inches. Weight (lbs. oz.): 0.09. Heat Retention: 190 degree F at 1 hr. / 163 degree F at 6 hrs. Cold Retention: 46 degree F at 6 hrs.