Ditto on the gravity bag, we have a 5 liter that filters to micron level, so mechanically removes viruses.
Still, I always bring unexpired tablets, their weight is essentially zero. I was taught to dissolve them, invert the water bottle, and unscrew the lid enough to let the solution flush out the water from the threads, as even that could be enough to get you. Not sure how this can work with a steripen.
Still, I always bring unexpired tablets, their weight is essentially zero. I was taught to dissolve them, invert the water bottle, and unscrew the lid enough to let the solution flush out the water from the threads, as even that could be enough to get you. Not sure how this can work with a steripen.