Keep contents hot up to 4 hours and cold up to 16 hours. Made with certified 90% post-consumer recycled steel. Impact-resistant base cap provides added durability and protection. Award-winning Climate Lock vacuum insulation. Splash-proof Flip Lid. Thin rim for comfortable drinking. Sweat proof construction protects surfaces. Chip-resistant Klean Coat finish. BPA free. Wide stable base. Cup holder friendly (fits most cup holders). Dishwasher safe. Material: 18/8 food-grade stainless steel. Weight: 340g. Size: 6.5"x3.28" (165.1x83.3 mm). Opening Diameter: 3.08" (78mm). Manufacturer: Klean Kanteen. Manufacturer's number: K16RTF-OB.