Yes, the platform does go back and forth in a rocking motion.
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Our flexible height adjustable footrests are built tough to take abuse in industrial environments. The all-steel frame with a 3/8 inch think composite plastic is tough enough to allow for regular height adjustments within one inch increments. Our FR315 foot rest locks easily into place and readily adjusts as you do to accommodate your most comfortable foot and leg position. And you'll appreciate the generous 23 inch wide platform that is over 11 inches deep.
Yes, the platform does go back and forth in a rocking motion.