The broad, 4 in. width of the 10 Lb. Teal, Medium 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.