All bottles age, even our premium TWIST Bottles, with frequent use. When it's time for a replacement, simply detach the magnetic connector from your old bottle using a coin, and attach it to your new replacement bottle. Refresh your bottle while saving resources with the TWIST 450 Replacement Bottle. Always BPA-Free & BPS-Free. Includes TWIST Bottle. Does not include TWIST Connector or Base. - Includes TWIST Bottle Only - Does not include TWIST Connector or Base - 450 ml / 15.22 fl oz - Always BPA-Free & BPS-Free - Leak-proof, self-sealing bottle cap with high-flow valve - Includes removable dust cap - Compatible with all TWIST Bases - Dishwasher-safe without Connector - Proposition 65 Approved