This is the perfect backpack for everyday use or for travel.  Exterior is made from nylon and waterproof canvas and features 2 large side pockets with zipper closures, 2 mesh bottle holders and a zipper pocket on the back.  Interior is made from waterproof canvas and features a large slip pocket and a zipper pocket.  The top of the bag closes by rolling down and securing with a quick-release buckle.
 
Approximate size:  12" wide x 8" deep x 16" tall