What Waterproof Bag Sizes Work for Every Use: The Ultimate Guide

If you’ve ever struggled to pick the right waterproof bag—one that’s big enough for your trip yet compact enough to carry comfortably—you’re not alone. From a 2-liter dry pouch for your phone to a 60-liter expedition pack, size is what defines how useful a waterproof bag really is. For both outdoor enthusiasts and product designers, understanding waterproof bag sizes is the difference between perfect functionality and product returns.