Victory Athletic Gear Exercise Resistance Bands - Set of 5 Loop Bands with 3 Bonus Online Workout Videos & Quick Start Workout Instructions Heavy-duty quality bands with 5 different resistance levels. Bands measure 12x2 inches. Integrates well with popular workout routines such as Insanity, P90x, Crossfit, Yoga, TRX & Pilates Excellent for general stretching exercises & power weight programs. A convenient travel workout. Can be used as physical therapy bands (rehab) for people who suffer from knee, leg, and back injuries. Made of premium quality 100% natural latex, without TPE. Super elastic, resistant and long lasting.