For use with #GFID71 only
Most comfortable ergonomic design and fit
Improves posture and spinal alignment
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Inertia Wave® SOLO - Royal Blue Free Standing For use with #GFID71 onlyXM Fitness Special Edition The Inertia Wave SOLO builds a stronger core and kick starts your metabolism using a series of 7 specially designed methods. Inertia Wave Back, abs, core, biceps, triceps, forearms, shoulders, rotator cuff, hamstrings, quads, calves. Hero Wave Back, biceps, triceps, forearms, shoulders, rotator cuff, hamstrings, quads, calves. Crossfire Abs, core, obliques, spine, shoulders, forearms, hamstrings, quads, calves. Thunder Slap