Resistance Bands are your partner in crime for any exercise you want to tackle. Perfect for low-impact training, rehabilitation, stretching and mobility, these lightweight and easily packable bands will help you push and pull your way through anything. You can use them to strengthen upper and lower body while improving range of motion. You can isolate and target specific core muscles with 5 resistance levels. 5 Levels of Resistance: Green for Extra Light Resistance: 10-15 lbs Blue for Light Resistance: 20-25 lbs Yellow for Medium Resistance: 30-35 lbs Red for Heavy Resistance: 35-40 lbs Black for Extra Heavy Resistance: 45-50 lbs Each band is 12" long and 2" wide