4 different resistance levels Green(10Lbs),Blue(20Lbs),Red(30Lbs),Black(40Lbs) Professional Grade Flexibility and Strength Workout Bands Resistance- Get Your Shoulders, Hips, Arms and Legs Toned Fast without Adding Bulk and with Minimal Effort. Perform Better Using This Exercise Bands For Arms Workouts As Well As Resistance Band For Legs Training. Can Also Be Used As A Booty Ankle or Hip Tension Bands Workout Or X-Training Made of durable latex that is snap resistant and  help you strengthen your body. Perfect for squats, lunges, side-to-side exercises, stretching, triceps and biceps exercises, and MANY more! Quality-All stretch bands are 100% genuine eco-friendly latex (Not rubber bands which are much cheaper and tend to break) All 4 Bands For Exercise Are Tough and Elastic For at Home Exercise. The resistance strength was measured by macine at the state of 3 times prolonged.