DESCRIPTION:Theraband resistive exercisers have been clinically proven in use for over 30 years to improve strength, range of motion, balance, and functional activities in many different patient populations.Elastic resistance is a unique type of resistance training compared to other traditional forms, such as isotonic or isokinetic resistance.The resistance provided by elastic bands or tubing is based on the amount that the band or tubing is stretched.Regardless of how long the band or tubing is before it's stretched, the force produced at its stretched length depends on the per cent elongationTHERABAND brand products comprise the worlds leading line of progressive elastic resistance exercise products for professional rehabilitation and wellness.WHAT'S INCLUDED3x Resistance Band (YELLOW/RED/GREEN)