Add more resistance to your knees with heavy or medium resistance bands geared toward enhancing...
-Leg and Hip Flexor Speed - Leg and Hip Flexor Strength - Running Endurance - Knee Kicks, Sprinting, Leg Power, and Hip Flexors - Core Strength
*- Two different colors for two different strengths. Gold Bands are Heavy Strength Bands. Silver Bands are Medium Strength Bands
*- Knee Bands and Arm Bands are the same length