Main attributes of a good water bottle
Performance. Look for a minimum of a vacuum, prefferably triple insulated and certainly a wide opening
Look. Single colours look amazing but ensure they are powder coated, if a pattern is required check the finish as many we tested were not smooth
Cost. A great water bottle should be in the region of £20 - £30 pounds, if your spending more make sure its worth it as we found some absolute beauties within this price range.
Brand. A good brand here is probably more important than normal as you cannot see a vacuum nor the wall thickness etc so buy once and buy well, you would not make a mistake buying our top pick thats for sure!