5 Pcs Professional Resistance Bands. Latex-Free, Elastic Band, Work Out Bands, Stretch Bands for Working Out Women or Men, Exercise Bands Set for Physical Therapy, Yoga, Pilates5 Level Resistance(3 20pounds): You will get a set of resistance bands including five colors, different colors represent different stretching forces. Each stretch strength (color) is suitable for different exercise levels and different exercise purposes. And unisex. Resistance Levels: Gym resistance bands come in 5 different resistance levels: Yellow Band (X Light, 0. 25mm), Red Band (Light, 0. 3mm), Green Band (medium, 0. 35mm), Blue Band (heavy, 0.