Our high end eercise bands are 12“x2” and come in 4 varying resistance levels: 0.3, 0.7, 0.7, and 0.9mm. They are portable, simple and effective; you can change your position to target different muscles in arms, chest, belly, gluteus, legs, and more; the bands will make your training more challenging and give you better results.  Great for cool downs and stretches too!  Receive 4 Lightweight Bands with a portable Black Bag for storage.