Along with it's smaller version, the Grip 3 ball roller bag is made up of tough 600 Denier Polyvinyl fabric with Satin Finish Nylon. Has a super duty molded plastic frame and 2 large 4" X 2" bearing wheels for those heavier loads. The large side pocket, large interior accessory pocket, smaller personal belongings compartment, along with adjustable shoulder strap are some extras included. Other extras featured are the shoe compartment which holds up to us men's size 15, and fully locking handle for easy moblility.