Versatility is the name of the game with the REI Flash 18. For use in your larger backpack or duffel, this lightweight daypack cleverly converts into a stuff sack simply by turning it inside out!
Turn inside out and it's a stuff sack to help organize your gear; once at basecamp, reverse it and use as a daypack for short hikes away from camp
Hydration-compatible design has an hose exit port and an internal sleeve to hold a hydration reservoir, sold separately
Top-loading entry features an efficient, single drawcord that cinches skirt closed with single tug; small flap covers the opening when cinched closed
Lightweight shoulder straps supply comfortable load carrying; adjustable, sliding sternum strap adds stability and helps keep straps ideally positioned
Front of pack features twin daisy chains running vertically and a tool loop at the bottom for attaching items on the front of the pack
Storage sleeve inside features organizer slots sized for the Ten Essentials
140-denier ripstop nylon construction provides increased durability without added weight; polyurethane coating offers weather resistance
Like the reviews of the older model said, this is great for specific purposes... but aren't all packs?
I use mine as a leader's pack while doing long alpine rock routes. The pack is simple in that it is a tube with two rows of daisy chains down the back. I've added shock cord between daisy chains which allows me to store crampons, jackets, helmet etc. Also, I've sewn on another tool loop to accommodate two ice tools.
I don't use a foam pad in the pack and just use my jacket to keep things off my back instead.
I also use this pack for long dayhikes/scrambles, train running and biking. As a small pack, you can't get much better for under $30.