A superior band product for resistance training and rehabilitation, provides both positive and negative force on muscles and joints, stretches tones and conditions all major muscle groups Improves strength, range of motion and flexibility in a simple to use, portable product that works in the clinic, the gym, at home or on the road Color-coded Progressive Resistance system allows users to recognize improvement as it happens, as you grow stronger you can move up to the next color Non-Latex Professional Resistance Bands with no scent and no powder meet the needs of patients, practitioners and personal users with latex allergies, and are the best option for facilities and hospitals with a "no latex policy" Medium Red Bands are the third of eight levels of resistance and great for rehabilitation and light resistance exercise, they offer 3.7 lbs. resistance and 25% increase from preceding color at 100% elongation, and 5.5 lbs. at 200%, each roll measures 25 yards long x 4" wide