| 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 Ultra Toner Exercise Guide |  | | This 60-page easy-to-follow exercise reference guide features 30 of the most popular Ultra Toner™ upper body resistance exercises! | |