Seems obvious that the reason bagged liquids are less common is because it's awkward as hell to hold and carry, especially at larger sizes?
Even with some kind of handle, a soft, floppy bag is less ergonomic to carry than a hard-sided container with a molded handle. The only use case for a soft-sided liquid container that makes design sense are the flasks that fit inside a running vest and therefore flex to the shape of your chest along with the vest material.
Even with some kind of handle, a soft, floppy bag is less ergonomic to carry than a hard-sided container with a molded handle. The only use case for a soft-sided liquid container that makes design sense are the flasks that fit inside a running vest and therefore flex to the shape of your chest along with the vest material.