This duffel is water resistant and well-constructed. Key features are the diagonal zipper that makes it easier to reach contents inside and the abundance of pockets. It has been a pretty good carryon because it is a manageable size. The duffel is surprisingly spacious with a number of outside compartments and the customizable straps come in handy. Since its not made of the most heavy duty material, I always worry that it will get easily look worn and scuffed, but it has kept up fairly well. I really like how sleek and sporty it looks even though I have never used it to carry any exercise-related items.