The first stainless steel bottle with a flow-rate designed for cyclists.Better flow by design. Leveraging the experience of Bivos ex-NASA engineer, they methodically developed the Bivo One to achieve an unmatched flow-rate without the need to squeeze. The result is a smooth, consistent and enjoyable drinking experience they know youll love. *Fun fact you can empty a Bivo bottle faster than you can squeeze most traditional 21oz plastic bottles. Its really that fast!