will it hold a 11 inch, 20 oz hydro flask in the water pocket?
KYLE S yes, i hold 0.75 liter nalgene bottles in it all the time
TODD S I purchased my pack for business purposes so I have not tried to fit water bottles in the side pockets, however, I was very surprised how much room was in the pack and how large the side pouches are. I'm sorry i couldn't answer the questions more specifically. I have been very happy with this purchase.
LAURA T Yes...I've fit a variety of grocery store and refillable water bottles in it.