Huge zipper backpack with multiple compartments to accommodate triathletes and each event. Space for helmet, wet clothes, multiple shoes and all accessories necessary for racing. The pictures don’t do justice to all this bag has to offer. My husband used it for a couple of full Ironman races. He has retired and would love for someone else to enjoy this awesome backpack. SIZE: 20"x13"x9"x inches (51*33*23 cm)