fit simplify resistance band set (17 pieces total) loop exercise bands and tube bands with handles, ankle straps and door anchor fit simplify this premier resistance band set from fit simplify includes our popular set of 5 loop bands plus our 12 piece tube 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 tube bands are made with fabric straps and reinforced grommets. the carabiner clip ends make it quick and easy to attach the included handles, ankle straps, or door anchor.