The Arena Fastpack is a versatile backpack designed for sports enthusiasts. The bag is cleverly laid out and has a capacity of up to 40 liters. The Arena Fastpack's features include a large rear compartment for large training tools and a bottom pocket for wet clothes and shoes. Because you can use the Arena Fastpack can be hung with a carabiner, you can use this bag as a (swim) closet to easily store your gear and clothing. Because the back and shoulder straps are padded, the bag is very comfortable to carry even when the bag is full. The bottom of the Arena Fastpack is reinforced and protects the contents of the bag from wet floors. The design and contents of the Arena Fastpack makes the bag suitable for triathlons.