Finally a vacuum insulated stainless steel water bottle that's easy to clean! Just twist to remove Riley's base to easily clean the inside of your bottle and add ice. Vacuum insulation keeps drinks cold up to 24 hours and hot for up to 6 hours. Riley's leak-proof threaded lid features a built-in silicone carry loop for carefree transport. Hand wash vessel recommended. Base and lid are dishwasher safe. All parts BPA free.