The broad, 4 in. width of the 25 Lb. Black, Super X, GoFit® Ultra Power Loop provides more resistance for strength-building power. Along with Brook Benten’s workout, these simple, yet powerful resistance loops are an ultra-portable solution to targeted fitness training. Develop and condition your “pillar of strength”—your lower body—building stronger and leaner legs, hips and glutes. With GoFit® Ultra Power Loops, look and perform better for an active, fit life. Please note this product contains latex. * Before beginning any weight loss or exercise program, you should consult with your physician.