ENJOY HOT, COLD & FIZZY DRINKS FOR LONGER: Triple-vacuum insulated keeps drinks hot, cold and retains fizz for hours. Expect up to 24 hours of cold drinks, hot drinks stay hot for up to 12 hours and ice that lasts for up to 2 days. LEAK-PROOF LID: Won’t leak when filled with hot, cold or fizzy drinks. Includes rubber gasket to ensure tight leak-proof seal STARTS FIZZY, STAYS FIZZY*: Smooth stainless steel interior reduces nucleation points for longer-lasting fizz. (*Lab-tested using commercial carbonated beverages, ensuring a minimum carbonation of 2.5g/l is maintained throughout the testing duration EASY TO CLEAN: Ninja Thirsti Travel Bottles are dishwasher safe and can be hand washed with warm, soapy water 5-YEAR GUARANTEE**: (**Limited guarantee against manufacturer defects. Upon registration with Ninja )