The BeBooty 80 FAST FOOD resistance bands labelled “80” are new types of bands that have the same length in all sizes (S,M, L). They only differ only in the strength of resistance. A rubber resistance band is a handy fitness tool for effective exercise of thigh and arm muscles. Even tough the exercises might look simple, they will kick your butt. All you have to do is thread your arms or legs and use the resistance to make squats or donkey kicks more difficult. The anti-slip rubber grippers allow the band to stay in place during a workout.