Have specially the 2t hardest taken because I go to the gym and nocht necessarily little have power, the first thing I was surprised that it is circular thought it would be an open rubber band which can be used biceps good for triceps and but it was not then so out pieken had somiz me exercises first that it can be mastered with the band is extremely strong, there is little to almost as auszumahlen when an attempted car tires garnicht to pull apart woe the strongest band then so first rather ne ne number size smaller or 2; -) so dear as I said would have an open band had now I give myself the researched exercises back and buy another for tri band and biceps all in all, would recommend it for people who know how to use it
