XPRT Fitness Resistance Bands Pull Up Assist Bands Stretching Powerlifting Set of 4. The 100% natural Latex bands are very durable and have an anti-snap design that makes them safe and easy to use. Our set of pull-up assist bands can help you transform the usual chin-ups, ring-ups, and muscle-ups into a challenge and fun. It helps to sculpt and tone your body easier and faster so that each workout will make a difference. 4 lightweight colorful bands that correspond to low to heavy resistance levels. You can also use multiple resistance bands at the same time.