SPRI FCS-HBR Fitness Conditioning System Xering and Ultra Toner (Heavy Resistance) Develop upper and lower-body strength with two of SPRI's most popular workout tools For medium 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