Are you an active athlete and intend to stay fit? If so, the UFC OCTAGON DUMBBELL 22.5 KG could be the right helper for you. When choosing the right dumbbell for your workout, keep in mind that you can't change the weight on this one. When it comes to the weight of this dumbbell for UFC training, it is a full 22.5 kg. It is made of steel and it has a rubber coating.