This 16-ounce WaterWeek bottle set is BPA free and reusable. A convenient solution to reduce dependence on buying bulk bottled water. WaterWeek comes as a smartly designed set of 5, BPA free, reusable, dishwasher safe water bottles nestled in a convenient slim tray that slides neatly into the refrigerator. Just fill, chill and go. Patented design makes it easy for you to maintain the convenience of having a pre-chilled ready to go bottle and gives you an alternative to the wasteful, expensive and sometimes chemically unsafe plastic in traditional bulk bottled water.