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Air Relax
Air Relax Pro AR-4.0 Leg Recovery System
$935
Best Compression Recovery Boots · head-to-head
Air Relax Pro AR-4.0 Leg Recovery System vs FIT KING Recovery Power Pro Massage Boots (FT-091A)
A sourced, side-by-side comparison. FIT KING Recovery Power Pro Massage Boots (FT-091A) is cheaper at $449.99. Every spec and price links to its source.
FIT KING
FIT KING Recovery Power Pro Massage Boots (FT-091A)
$449.99Cheaper
Which is better: the Air Relax Pro AR-4.0 Leg Recovery System or FIT KING Recovery Power Pro Massage Boots (FT-091A)?
On the specs we track, they're closely matched. The FIT KING Recovery Power Pro Massage Boots (FT-091A) is the cheaper at $449.99.
See Air Relax Pro AR-4.0 Leg Recovery System on Amazon See FIT KING Recovery Power Pro Massage Boots (FT-091A) on Amazon
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Air Relax Pro AR-4.0 Leg Recovery System | FIT KING Recovery Power Pro Massage Boots (FT-091A) |
|---|---|---|
| US price | $935 | $449.99 |
| Brand | Air Relax | FIT KING |
| Released | — | — |
| Pressure range mmhg | 40-170 mmHg | 40-150 mmHg, 12 adjustable intensity levels |
| Chambers zones | 6 | 4 zone controllers with overlapped airbags, 360° wrap coverage |
| Sequence modes | Multiple predefined recovery programs, plus manual pressure/time selection | 3 |
| Power source | Dual-voltage 100-240V AC adapter (plug-in); optional 5,000 mAh/72Wh battery pack rated 2.5 hr continuous use | Rechargeable battery, 2500 mAh, 3-4 hours per charge |
| Boot size range | Size 2 (26-30 in inseam), Size 3 (30-34 in), Size 4 (34+ in) | Small, Medium, Large |
| Session timer | 1-95 minutes, user-selectable | 10 time intervals from 15-60 minutes |
| App control | No | No |
| Weight portability | Includes 38L carrying case; unit weight not published by brand | Includes portable storage bag; handheld smart controller with LCD display |
Sources — Air Relax Pro AR-4.0 Leg Recovery System: air-relax.com (verified 2026-08-05). FIT KING Recovery Power Pro Massage Boots (FT-091A): fitkingshop.com (verified 2026-08-05).
What's the difference between the Air Relax Pro AR-4.0 Leg Recovery System and FIT KING Recovery Power Pro Massage Boots (FT-091A)?
Where the two actually differ on the specs we track (7 of 8). Matching specs are omitted.
- Pressure range mmhg: Air Relax Pro AR-4.0 Leg Recovery System 40-170 mmHg vs FIT KING Recovery Power Pro Massage Boots (FT-091A) 40-150 mmHg, 12 adjustable intensity levels
- Chambers zones: Air Relax Pro AR-4.0 Leg Recovery System 6 vs FIT KING Recovery Power Pro Massage Boots (FT-091A) 4 zone controllers with overlapped airbags, 360° wrap coverage
- Sequence modes: Air Relax Pro AR-4.0 Leg Recovery System Multiple predefined recovery programs, plus manual pressure/time selection vs FIT KING Recovery Power Pro Massage Boots (FT-091A) 3
- Power source: Air Relax Pro AR-4.0 Leg Recovery System Dual-voltage 100-240V AC adapter (plug-in); optional 5,000 mAh/72Wh battery pack rated 2.5 hr continuous use vs FIT KING Recovery Power Pro Massage Boots (FT-091A) Rechargeable battery, 2500 mAh, 3-4 hours per charge
- Boot size range: Air Relax Pro AR-4.0 Leg Recovery System Size 2 (26-30 in inseam), Size 3 (30-34 in), Size 4 (34+ in) vs FIT KING Recovery Power Pro Massage Boots (FT-091A) Small, Medium, Large
- Session timer: Air Relax Pro AR-4.0 Leg Recovery System 1-95 minutes, user-selectable vs FIT KING Recovery Power Pro Massage Boots (FT-091A) 10 time intervals from 15-60 minutes
- Weight portability: Air Relax Pro AR-4.0 Leg Recovery System Includes 38L carrying case; unit weight not published by brand vs FIT KING Recovery Power Pro Massage Boots (FT-091A) Includes portable storage bag; handheld smart controller with LCD display