Harbinger Weighted Fitness Ball With Strap: Sand-filled ball of soft PVC plastic with a Velcro strap to hold it to hand or foot. Likes: More useful than a similar-weighted dumbbell. That's because, in addition to a variety of core and upper body exercises, these 6-, 8- or 10-pound balls can also be used for leg exercises (adductor/abductor, curl and extension). It's also much safer than metal dumbbells because it doesn't hurt when it drops on your big toe. Can be held in one or two hands. Dislikes: The weights are non-adjustable and too light for dedicated gym rats. Price: $20 (6 pounds), $25 (8 pounds), $30 (10 pounds). Available only from retailers; prices will vary. (800) 729-5954; www.harbingerfitness.com.
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