The CUBE Drinking Bottle FLOW DS has our own specially developed heart chamber valve and a comfortably soft drinking mouthpiece as well as a large screw lid for optimal filling and cleaning. The lid is covered with a soft plastic for better grip. The bottle body is constructed from particularly elastic, durable and odourless HEMX plastic. Available in two sizes: 0.5 and 0.75 litres, and comes in different designs - perfectly matched to our products.