Tupperware plastic bottle is made up of safe non-toxic non-carcinogenic materials. Thus they do not release harmful chemicals to food or liquid contents. you can carry these bottles to office schools jogs picnics treks and more. The sturdy plastic material is durable.They look extremely neat and tidy. These bottles are spill-proof so you dont have to worry about unwanted water leakage. The best part about these bottles is that they are unbreakable.