This is a gray OCEAN & GROUND backpack, size M. I bought it for my daughter when she was around first grade. I think it said it was a size for lower elementary school students, but I think it can probably be used through elementary school. My daughter doesn't use it anymore. It hasn't been used very often, so it's in good condition, but there's some scribbling on the back where you write your name, done with a permanent marker.