Product DescriptionSize: 6511.52.5cmColor: black and redMaterial: PP+chrome-plated spring steel wirePackage content: 1* tensioner1.DUAL PURPOSE RESISTANCE BANDS: The spring exerciser include two engineering plastic handles, according with ergonomic design. The combination of grip and stretcher makes the exercise more comprehensive.2.REMOVABLE SPRING: There are five springs in the chest expander , which can be increased or decreased according to our own exercise needs to find the most suitable workout intensity.3.ELABORATE CRAFTMANSHIP: The spring is carbon steel wire and is delicately treated with chrome. The connecting spot make them thicker so that when we using, it become more stable and durable.4.PORTABLE: The handle is foldable, and the spring exerciser is approximately 11.5cm long after folding. Therefore, product intimate design, small size , portable, ready to exercise.5. Suitable for all types of people: Perfect for adult men and women of all fitness levels; allows almost everyone to build muscle, melt fat and get a perfect figure.