Feature decoder · Updated May 8, 2026
Massage chair tech, decoded.
Brochures call everything "premium" and "advanced." We translate the marketing back into what the rollers actually do, what the recline position changes, and where the upgrade is worth paying for.
- 3D vs 4D massage chair
What the rollers actually do at each tier, and when the upgrade is worth $700–$1,500. Verified motion specs.
Read explainer → - Zero gravity
A NASA-derived recline position, not a feature category. Verified angle, wall clearance, and marketing-claim debunking.
Read explainer → - Full-body coverage
What 'full-body' actually means. L-track vs SL-track, airbag zones, and the marketing label trap.
Read explainer → - SL-track vs L-trackComing soon
How the roller path differs, who needs which, and why L-track wins for tall users and lumbar comfort.
- Body scan accuracyComing soon
Which chairs auto-align rollers to your spine reliably, and which use the same default for every user.
- Airbag systemsComing soon
Compression on shoulders, arms, calves, feet. How airbags differ from rollers and where each wins.
Decode features against your fit
Run a fit check first.
Once we know your body and room, the explainers point you to the features that actually change the experience — not the ones that sound impressive.
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