No particular reason to leave the lid off. I just dont like my tool bottle to look like a drinking bottle that's all. And if like me you've got tons of bidons laying around collecting dust, but without a so called big mouth you can just saw off the top. Really no need to spend cash on a new bottle for this.
EDIT: A great alternative for zipper bags is the Lezyne Caddy Sack, which can also be tucked in a jersey pocket with a lot more stuff than you'd usually put in there.
No particular reason to leave the lid off. I just dont like my tool bottle to look like a drinking bottle that's all. And if like me you've got tons of bidons laying around collecting dust, but without a so called big mouth you can just saw off the top. Really no need to spend cash on a new bottle for this.
EDIT: A great alternative for zipper bags is the Lezyne Caddy Sack, which can also be tucked in a jersey pocket with a lot more stuff than you'd usually put in there.