JMJRwrote a review of Black Diamond Nitro 26L Backpack on July 12, 2017
Familiarity: I've used it several times
I have one of theses for day hiking in CO. Holds a puffie, hat, gloves, shell, food, hydration bladder, and fits well. Very light weight too. I highly recommend it. I might even use it for mountain biking.