These Resistance Bands work the whole muscle， including the stabilizers where free weights and machines cop out. This means you get a healthier， stronger look and feel. Resistance training with bands and tubes has long been the physiotherapist′s answer to torn rotator cuffs， bad knees and general rehabilitation. Resistance bands uses the same tension training principles but takes them to another level by applying them to a fast and effective total body workout. You don′t need to wait for an injury. Using Ripcords， you can look and feel better than you would with traditional weights， while protecting your body at the same time. In addition， resistance bands are completely portable， so you can workout anywhere. Combine that with the P90x or Slim in 6 workout routine and the results will speak for themselves.                                    Features            1. Develop the greater pectoral muscle and the deltoid muscle for making strong and beauty2. Unique design and high quality， never used3. Resistance Bands offer a wide range of flexibility and strengthening exercises4. Have a great workout on this chest expander5. Light and handy， easy to carry and keep6. Ideal for upper and lower body conditioning7. Portable for home， office and travel8. Stay slim and fit with the resistance bands9. Complete progressive resistance exercise program containing tension-progressive resistance bands10. Provides both positive and negative force on the muscles， improving strength， range of motion and cooperation of muscle groups11. Color-coded progressive resistance makes it simple to know which band to use for each exercise12. Different resistance levels are determined by thickness of the band or the tubing                                                            Specifications            1. Level Of Resistance ( Beginner to Expert )<br>Yellow ----- Extra Light Resistance 5lbs (Dimensions: 6 x 9 x 1200 mm)<br>Green------ Light Resistance 10lbs (Dimensions: 7 x 10 x 1200mm)<br>Blue ------ Medium Resistance 12lbs (Dimensions: 6 x 10 x 1200mm)<br>Red --------Heavy Resistance 15lbs (Dimensions: 5 x 9 x 1200mm)<br>Black –---- Extra Heavy Resistance 20lbs (Dimensions: 6 x 11 x 1200mm)2. Weight: 23.28 oz / 660 g                                                            Package Includes            1 x 5 Resistance Bands for Chalean Home Fitness NIB