This kit includes four (4) mini resistance band loops and instructional booklet. Bands are 12”Lx2”W, and vary in resistance from Light to X-Heavy. Suitable for indoor and outdoor use, these are the same commercial grade bands used by WorkoutLA coaches for personal training and group classes. Ideal for mobility training, physical therapy, and chiropractic rehab. Use these bands to increase strength and stability in both the upper and lower body.