Review on 21 oz. Stainless Steel Hydro Flask Standard Mouth Water Bottle with Sport Cap - Reusable, Vacuum Insulated by Andrew Young

which I loved but lost on the golf course. This thing worked so well I was upset that I lost it. I bought this new one to replace and the difference in insulating ability is terrible. With the old model, I could put some tap water and 2 ice cubes in it overnight and still have cold water in the morning. Now I have to put 5 times more ice to get some cool water in the morning. The difference is not only in the sports cap and the screw cap. You can feel the outside of the bottle actually getting cold when you pour cold water inside. This means the water bottle does a terrible job of insulating. The quality of their workmanship seems to have declined as their popularity increased. Very disappointing.