Spri Xercuff Plus: A strength-resistance device made of a loop of industrial latex stretch-cord tubing with two attached cushioned Velcro handles. Likes: Simple but effective all-body resistance in a 4-ounce package. Although originally designed for leg-resistance exercises to be used by kickboxers (the cuffs can strap around your ankles), it does a surprisingly good job on upper body muscles too, such as pec flies and one-arm rows. Many other exercises available on instruction chart and on several 30-second tutorials on the website. Five color-keyed resistance levels available. Dislikes: None. Price: $20.95. (800) 222-7774; www.spriproducts.com.
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