The arena Fastpack 2.1 is a functional backpack made for the needs of swimmers. A large main compartment provides enough space for training tools. Thanks to the carabiner hanging feature it can be hanged up on a door or wall in the locker room and used as a closet. The front pockets provide space for cloths and utensils, in the flap is a mesh pocket, which can be used as a washbag. The padded shoulder straps are comfortable even with heavy load, because the carrying system is improved to provide a better fit. An additional shoe pocket stows away wet and also dirty sandals. A special wet pocket separates wet cloths from dry cloths.