My Contigo Autoseal water bottle has been used day and night for 10 years and is still like new. I put 3 large ice blocks in it, fill with ice water and it lasts 12 hours, or until the water is gone. Repeat before bed and it lasts another 12 hours. Australian summer days are often over 40C degrees, still stays cold but needs a refill more often. Lock button is used when travelling. It goes wherever I go.