TheraBand 5-foot Resistance Bands are available in five levels:
- Yellow - Thin Resistance
- Red - Medium Resistance
- Green - Heavy Resistance
- Blue - Extra Heavy Resistance
- Black - Special Heavy Resistance
Proper use of these systems for resistive exercise provides both positive and negative force on the muscles, improving strength, range of motion and cooperation of muscle groups. Color-coded progressive resistance gives at-a-glance documentation of progress from one level to the next.