After using the old collection for my son and older have had complete satisfaction, I decided to buy the "natural" bottle for my daughter 9 years later. These are fine ... except that after six to nine months of use and washing in the dishwasher, the cap is too loose and no longer fits on the bottle ... what a pity! Besides the plastic body and cap is colored orange if washed in the dishwasher (following a meal "with tomato").
