This replacement cap features an easy to drink from silicone nozzle which auto-seals after each sip and includes a flip cap cover to keep away outside elements.  Fits all current HydraPak products with a 28mm opening including the Stow 500ml and 1L bottles, and SoftFlask 150ml.

*Note that caps only fit on the 28mm threads of 2020 models or newer. Please review our FAQ page on how to identify which version you have.