Flash

I like my flash pack as I use it as a stuff sack inside my bigger pack and then use it for a day hike pack when I leave camp. It doesn't weigh alot considering the versatility it give me and I don't have to carry my regular pack. You don't want to carry alot of weight in it but a water bottle, sweater, water filter and some food is no problem at all. The price of 25 bucks was just right.

Great summit pack - I use it as a stuff bag for my sleeping bag when backpacking in and then as a summit pack. I also use it as a day pack.
It has enough room for a 3 liter bladder, a fleece and a bit of food and then I can strap gear on the outside. Yes, you cannot haul too much in it but that is actually an advantage as it forces you take just the essentials!!
I also moves pretty well with your body when climbing (comfortable on 10b route) and doesn't get in the way.
Great pack for the price!!

This is a great pack for specific jobs. I use mine as an ultralight day pack to carry the essentials, but it's best use is as a summit pack. I use it as a stuff sack for my food inside my larger pack and then take it out as my summit pack once camp is set up. For $25 you can't go wrong.

I bought this pack as an alternate to my larger Granite Gear daypack. As stated above, the pack works great for what it is designed for: the ten essentials. Much more and you will be wishing you brought a pack with more support. Also, Squishy's idea of the foam pad is an absolute must, if only to insulate your water bladder. I learned this on my first use of this bag, a 100 degree daytrip up Santiago Peak here in SoCal. I started off with a bladder full of ice and very little water, by the time we hit the summit my water was very warm and not very refreshing.

The one thing I wish they (REI) would do is make a larger size harness. The shoulder straps are very small (short) and because of this the chest strap always rides up against my neck. When hiking I usually leave the chest and waist clips undone. When climbing I clip the waist strap, but still leave the chest clip undone. I hardly noticed it while climbing Whitney's East Face. Plus I was able to secure the butterfly coil to the daisy chain so it didn't flop from side to side on the descent.

These flash packs are great. Lightweight and great for long day hikes.