BPA free Polyethylene material utilised for safe drinking See through strip with measurements allowing you to easily see how much liquid remains. Our materials are suited to handle the temperatures dishwashers can operate at. Our materials are safe to use in freezing conditions. Our products can be recycled into other useful items and help the environment by reducing excessive waste. Strong and flexible Low Density Polyethylene (LDPE) allows you to get the most from each drink. A larger than normal opening allows for the easy addition of ice cubes, supplements and cleaning.