This water resistant backpack is made from high strength ripstop nylon with double stitched tear points, a reinforced back and bottom and heavy duty metal zippers. Reflective stripe makes you visible in the dark. The adjustable strap make it sturdy when you are walking. Featuring a internal wet storage zipper pocket on the back that keep sweaty clothes, towels after swimming or exercising. This multi-use 40L traveling backpack is a great hiking, camping, outdoor backpack or portable day bag. 12.5" W x 21" H x 6.3" D