DETAILS: The broad, 4-inch width of GoFit Ultra Power Loops 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 SPECS: Ultra Power Loop Dimensions: 4" wide by 12" long. (Loops resting diameter is approximately 12".). The band resistances are approximately equal to 10 LB (teal), 20 LB (orange) and 25 LB (black) which provide multi levels of resistance to grow with your training needs