I have used this and the #2 for years in many different applications. Great materials and they have really thought through the design. It works perfectly in a pack, briefcase or suitcase. Get it now.

Most Practical Purchase
These bags are perfect for travel and everyday use. We have all three sizes. We use them for the pool, hiking, first aid kit etc., etc. They fit a lot of stuff and have various compartments. I use the smaller one in my purse and when I switch purses I don't have to unload and sort anything. Everything I need is contained in one small bag!

a bottomless pit
you would not believe how much stuff will fit in these bags. i bought the large one well over 5 years ago and it still looks like the day i bought it. i use it for band-aids, q-tips, fire starters, extra stakes, medicine, small mirror, waterproof matches, small roll of duct tape, extra spork, twine/guy chord, batteries and tons of other stuff. great for all the things that don't already have a good place to be stored. every once in a while i'll empty out all the pockets to see whats in there and i'm always amazed at how much stuff comes out. never seen a less than stellar product from outdoor research.

Perfect
I love these organizers and use several of them for a variety of applications. They are quality made and flexible enough for just about anything. My favorite use so far is a small fishing essentials kit, which has fishing line, hooks, swivels, bobbers, sinkers and a small variety of artificial critters.

Great product
I use the number 1 size to make two survival/medical kits for my daughter and myself. They worked extremely well and everything is organized and easy to access.