Quality Construction: Our 20-ounce water bottles are made of high-density polyethylene (HDPE). They are durable enough to withstand the test of time. Also, these bottles are break resistant. Wide Opening: Featuring a wide mouth opening, so you can easily add full-size ice cubes and the wide opening makes cleaning a breeze compared to narrow opening bottles. Fit Most Cup Holders: These bottles easily fit car cup holders and bike holders. Our bottles are a great choice for bike cages where there is not much room in the frame, especially on kid's bikes. Great Gift: Our bottle set makes a practical gift for different occasions. You can giveaway these bottles for classroom activities, sports teams, corporate events, camps. Read more