This is a never used Kavu sling bag, designed to fit across the body. It is a light blue rip-stop fabric. The main opening is lined with waterproof liner and mesh pocket (exterior facing). There is a velcro base that can be removed, but otherwise provides a nice hiding spot for precious things. Once both zippers are closed, a fabric covering keeps them mostly inaccessible to would-be thieves. There's a pocket on the back inside next to a water bottle holder. Since it hasn't been used, it's nice and clean on the inside!