Each refill container is 2.75 oz, the same as a pharmacy stick (it looks a lot smaller due to less plastic). Refills will run out depending on your usage patterns, lifestyle, and sweat/odor tendencies. Depending on how often you use deodorant or antiperspirant, refills typically last between 4 and 10 weeks, but the majority of Helmm users opt for our 7-week refill option. Our subscriptions are designed to be completely flexible and transparent, so you can customize, pause, change, or cancel at any time in your Account Dashboard.