Raidlight Bottle Holder is mountable on most backpacks where the shoulder strap can be detached. The Raidlight Bottle Holder simply sides on the the shoulder strap and can carry a standard 750ml bottle. On some packs you may require some simple modifiction to secure the bottle holder from slipping on the shoulder strap.
Fits 750ml bottle, holder weighs 80g
A great add on for your adventure!