Muscle Motion Power Bands/Strength Bands are an incredible versatile tool for adding resistance to stretching lifting and bodyweight training exercises. A higher quality band does not exist. Ideal for assisted pull ups and dips. All bands are made of 100% natural latex through a continuous layering process to ensure long life. Red Power Bands: ½" Wide 41" in length Resistance is 5-35 pounds (2kg-15kg) Primarily used for adding resistance to stretching exercises. Black Power Bands: 7/8"wide 41" in length Resistance is 20-70 pounds (9kg-31kg) Primarily used for adding resistance to stretching exercises. Purple Power Bands: 1 1/8" wide 41" in length Resistance is 25 to 80 pounds (11kg-36kg) Good choice as a general use band and a specifically for adding resistance to people under 140 pounds during walks high knees or sprints Green Power Bands: 1¾" wide 41" in length Resistance is 50-120 pounds (22kg-55kg) This band is also a good size for general use and for adding resistance to people from 63kg to 90kg for body movements. Good choice for pull up training. Blue Power Bands: 2½" wide 41" in length Resistance is 60-150 pounds (27kg-68kg) For use getting started on training for bodyweight pull ups and adding resistance for elite athletes and people over 200 pounds. Also a good choice for adding increment weight to power lifts. Orange Power Bands: 3¼" wide 41" in length Resistance is 70-175 pounds (31kg-79kg) Primarily used for adding weight to power lifts. ...