Comfort - The bag is a good fit for all types of biking and running activities. The bag feels weightless while wearing and sticks to your body. Even with the bladder bag full the bag still feels weightless. - the bag straps flex when going over rough terrain so it doesn't irritate your skin. Design - the pack looks really cool. It's very shiny with reflective material that makes it easier to see when you are out at night and during the day as well. Storage - With the bladder bag inside and when it's filled up the storage is very limited. I was only able to carry my wallet, phone and house keys during my rides. - Without the bladder bag you can fit a small book or laptop. Overall - I love this pack and recommend it to anyone.
Better quality than I anticipated for this price range. Bright color, strong clasps, and the water bladder was easy to put in place. Lots of separate pockets for some light hiking. I was able to comfortably fit all of our stuff (the full 2L bladder of water, snacks, keys, phones, wallets, chapstick, flashlight). The bladder has a nice, large opening for adding ice. I can even fit my whole hand in to dry it out with a paper towel. The nozzle is nice. Very easy to drink from. Also, the pack has lots of places to hook the nozzle/hose to keep it secure and close to your mouth in case you're biking or something.