Special Heavy Black CLX are the sixth of eight levels of resistance and great for rehabilitation and higher level resistance, they offer 7.3 pounds resistance and 25 percent increase from preceding color at 100 percent elongation and 10.2 pounds at 200 percent.

TheraBand CLX, Intermediate, 5', Black:

• Great for rehabilitation and light to moderate resistance exercise
• Offer 7.3 lbs resistance and 25 percent increase from preceding color at 100 percent elongation
• 10.2 lbs at 200 percent
• Provides multiple unique grip options
• Enables exercises like open and closed hand grips, holding objects with resistance, no-grip-required exercises