The HydroJug is designed to help you drink more and stay hydrated! It holds ½ gallon of water, so you will not be constantly wasting your time re-filling your water bottle. The wide-mouth opening makes it easy for you to clean, add supplements, or ice. We also made the plastic dishwasher safe so you will always be drinking clean water. The plastic is also BPA free! With the HydroJug there is nothing between you and crushing a gallon of water per day!