Independent Quality-Assurance Tested to Highest Safety Standard: Voluntary compliance to ULs inversion table safety standard makes Teeter Hang Ups the only inversion brand with certified quality. EZ-Reach Ankle System: The extended handle for the ankle lock system provides an easy-to-reach solution in addition to its triple lock security feature. Over-EZ Handles: Larger padded support handles assist during inversion and ascent. EZ-Stretch Traction Handles: Provide added benefit for inverted stretching and decompression, as well as an effective tool for oscillation.