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Ironman
Ironman Gravity 4000 Inversion Table
$349
Best Inversion Tables · head-to-head
Ironman Gravity 4000 Inversion Table vs Merax Vibration Massage Ultra-Thick Support Inversion Table
A sourced, side-by-side comparison. Ironman Gravity 4000 Inversion Table is cheaper at $349. Every spec and price links to its source.
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Merax
Merax Vibration Massage Ultra-Thick Support Inversion Table
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Which is better: the Ironman Gravity 4000 Inversion Table or Merax Vibration Massage Ultra-Thick Support Inversion Table?
The Merax Vibration Massage Ultra-Thick Support Inversion Table wins 1 of the 1 specs we compare head to head; the other wins 0.
See Ironman Gravity 4000 Inversion Table on Amazon Check Merax Vibration Massage Ultra-Thick Support Inversion Table price
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Ironman Gravity 4000 Inversion Table | Merax Vibration Massage Ultra-Thick Support Inversion Table |
|---|---|---|
| US price | $349 | — |
| Brand | Ironman | Merax |
| Released | — | — |
| Weight capacity (lb) | 350 | 300 |
| Max user height (in) | 78 | — |
| Inversion angle range | — | — |
| Foldable | Yes | Yes |
| Ankle lock type | Easy Reach Adjusting Ratchet Ankle Locking System with lever adjustment | — |
| Backrest material | Memory foam padding with double-stitched vinyl covering | Ultra-thick, high-density foam backrest |
| Heat massage | None | Yes — removable heat and vibration massage pad |
| Assembled weight (lb) | 76 | — |
Sources — Ironman Gravity 4000 Inversion Table: treadmillreviewguru.com (verified 2026-08-01). Merax Vibration Massage Ultra-Thick Support Inversion Table: amazon.ca (verified 2026-08-01).
What's the difference between the Ironman Gravity 4000 Inversion Table and Merax Vibration Massage Ultra-Thick Support Inversion Table?
Where the two actually differ on the specs we track (3 of 8). Matching specs are omitted.
- Weight capacity (lb): Ironman Gravity 4000 Inversion Table 350 vs Merax Vibration Massage Ultra-Thick Support Inversion Table 300
- Backrest material: Ironman Gravity 4000 Inversion Table Memory foam padding with double-stitched vinyl covering vs Merax Vibration Massage Ultra-Thick Support Inversion Table Ultra-thick, high-density foam backrest
- Heat massage: Ironman Gravity 4000 Inversion Table None vs Merax Vibration Massage Ultra-Thick Support Inversion Table Yes — removable heat and vibration massage pad