| SPRI Xertube Exercise Guide |  | | This easy to understand 62-page exercise booklet contains 30 of the most popular upper and lower body Xertube® resistance exercises! | |  | | SPRI Xercuff Exercise Guide |  | | Inside this 60-page Xercuffs® Exercise Guide you will discover thirty of the most effective and functional Xercuffs® lower body resistance exercises! | |  | | SPRI Xercise Ball Exercise Guide |  | | This easy-to-read 59-page exercise guide booklet includes 30 of the most popular stability ball stretches and resistance exercises! | |