Original and practical stainless steel coffee and tea tumbler Features drip proof system to prevent accidental spills, wide mouth for ice cubes, does not absorb Odors or Flavors and is made of sturdy material. Features a double wall vacuum insulated to keep 4 hours heat, 10 hours cold and 24 hours ice. All our products are BPA free. All our products comply with European quality standards. 304 high strength rust-proof stainless steel. Quokka Thermal Blue Coffee Tumbler (400 ml)