Highly reccomend a MOLLE water bottle pouch for the Backpack. : r

Molle Bottle Pouch : r/YetiCoolers

ROC Bottle Holster

Water Bottle Holster

10 x 4 Bottle Holder Maxpedition – MAXPEDITION

10 x 4 Bottle Holder Maxpedition – MAXPEDITION

Tan Bulle MOLLE Nalgene Water Bottle Pouch

USCCA Tactical Water Bottle Pouch - USCCA Store

10 x 4 Bottle Holder Maxpedition – MAXPEDITION

HYDRA Bottle Holder is a modular “one-size-fits-all” MOLLE-compatible pouch to keep you hydrated on your adventures. Made with grippy Hypalon rubber

HYDRA Water Bottle Holder - Vanquest Tough-Built Gear