SPRI FCS-VLBR Fitness Conditioning System Xering and Ultra Toner (Very Light Resistance) Develop upper- and lower-body strength with two of SPRI's most popular workout tools For very light intensity workout Ultra Toner works your upper body; Xering works your legs, hips, and buttocks Fitness Conditioning versions offer upgraded handles and longer tubing length 60-page Exercise Guide provides 30 different exercises for beginning, intermediate, and advanced levels