Versa-Loops Flat Band Resistance Loops at Power Systems. The closed-loop design of this 2 inch wide flat band fits comfortably around the upper or lower legs, so you can exercise the muscles of the hips and legs. The 12" long Versa-Loops are ideal for short, limited movements while the new 22" Versa-Loops Long are suited for more dynamic movements with greater range of motion. Versa-Loop: 12" L. Versa-Loop Long: 22" L. Both: 2" W.