I was looking for a back pack that was light weight, large capacity, could stand up to wet weather / water, and had several pockets. This is perfect! It is mesh, so dries quickly, as well as allows air flow to dry contents if needed. I carry my water exercise equipment, along with a towel and still have plenty of room. There are two zipper pockets for keys, phone, etc. And also one outside pocket for a water bottle. I would recommend this back pack for purchase.See full review