Average Resistance in pounds at 100% elongation. The bigger size of strength bands offers more options during your workout. They can also be used in toning different muscle groups. These elastic bands can be used in physical therapy during recovery process after injuries.
F1REB038 = 3/8" x 9" Light, 5 lb. F1REB058 = 5/8" x 9" Light/Med, 10 lb. F1REB034 = 3/4" x 9" Med, 12 lb. F1REB100 = 1" x 9" Heavy, 19 lb. F1REB150 = 1 1/2" x 9" Xtra Heavy, 27 lb.  
Average Resistance in pounds at 100% elongation
The bigger size of strength bands offers more options during your workout
Tone a variety of different muscle groups
Can be used in physical therapy during recovery process after injuries