TheraBand Wellness Station Professional Latex Resistance Tubing With Connectors for Physical Therapy, Exercise Station for Rehab, Lower Pilates, Set of 2, 24 Inch, Red, Medium, Beginner Level 3 Medium Red Tubes 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% To be used in conjunction with TheraBand Rehab and Wellness, Exercise and Wall Stations Tubing designed for use with the Exercise Station and Wall Station is available in 4 color-coded levels of resistance (Yellow, Red, Green & Blue) and 3 different lengths (12", 18" & 24") Comes with clip connectors Easy to use, set of 2