Because it is crafted from a single piece of high-grade aluminium, it is light and robust. It is also 100% watertight, even for carbonated drinks. In addition, the highly elastic EcoCare inner layer is acid-resistant, flavourless and free from BPA and phthalates. The Original from Switzerland with a simple Swiss design and a top that combines the classic opening with a wide-neck opening. Thanks to its grooves, the bottle provides excellent grip while you are drinking, making it a reliable training partner.