The Sistema hydrate Tritan quick flip bottle features a flip top lid with a simple push of a button to open and an angled internal silicone straw to get every last drop. This product is dishwasher safe (on the top rack) and is freezer safe. The Sistema hydrate range is easily washed by hand in hot soapy water, or it's safe in the dishwasher but ensure it goes on the top rack. Alternatively hand wash it in hot soapy water and then place it in water for five minutes with a sterilizing solution. Under normal use this should be sufficient to clean the lid.