Modi Resistance Bands Mutli-ring Pull Up Assist Single Band- Mobility Band - Extra Durable and Top Rated Pull-Up for Strength & Stretch Training This is a multi-purpose multifunctional resistance band; Can be folded to strengthen the resistance exercise; Convenient hand ring There is also a mechanical advantage in resistance bands that resistance is maintained through every part of the motion while many similar free weight exercises are actually non performing work during parts of the lift when movement isn't against gravity at a large enough angles With your resistance band training, every part of both the concentric and eccentric part of the exercise has resistance, resulting in better range of motion strength and more complete stimulation With your resistance band training, every part of both the concentric and eccentric part of the exercise has resistance, resulting in better range of motion strength and more complete stimulation Resistance bands will strengthen and elongate the muscle fibers. They also increase your flexibility tremendously