Two sizes: 600 or 450 ml. Stainless steel, 100% free of BPA, phthalates and toxins Does not add flavour to water. Thermo. 24h cold / 12h hot. Hands free. Take it wherever you want thanks to Closca's patented silicone flap. NFC connection. Find your nearest water recharge point with the Closca Water App and be part of the change. Silicone base. Protect your bottle and place it on any surface.