fit simplify resistance bands and pull up assist bands set (12 pieces) - - stretching resistance band - mobility and powerlifting bands - exercise pull up bands fit simplify this premier resistance band set from fit simplify includes our popular set of 5 loop bands plus our 4 piece pull up assist band set for the ultimate space-saving workout. the loop bands are made from natural latex and resist tearing even after intensive use. these 5 bands can provide up to 74 pounds (lb) of resistance. our pull up assist bands are also made with strong, natural latex. the four intensity levels can be combined together; providing up to 120 pounds (lb) of assistance.