The Nike Vapor Gymsack is an easy way to tote your extra gear! Carry this one like a backpack or sling it over your shoulder. It's perfect when carrying some extra clothes, a pair of shoes, or even use it to transport your wet gear since there are vent holes at the bottom. There is also a zippered pocket to store smaller items. When not in use, fold it up and easily store this lightweight sack in your tennis bag.