# Air Relax Pro AR-4.0 Leg Recovery System vs RENPHO Leg Massager, Air Compression Massager for Circulation & Pain Relief (FSA/HSA Eligible): specs and price compared

A sourced, side-by-side comparison of the Air Relax Pro AR-4.0 Leg Recovery System (Air Relax) and RENPHO Leg Massager, Air Compression Massager for Circulation & Pain Relief (FSA/HSA Eligible) (RENPHO) among compression recovery boots. RENPHO Leg Massager, Air Compression Massager for Circulation & Pain Relief (FSA/HSA Eligible) is the cheaper of the two at $59.99.

## Side by side

| Spec | Air Relax Pro AR-4.0 Leg Recovery System | RENPHO Leg Massager, Air Compression Massager for Circulation & Pain Relief (FSA/HSA Eligible) |
| --- | --- | --- |
| US price | $935 | $59.99 |
| Brand | Air Relax | RENPHO |
| Pressure range mmhg | 40-170 mmHg | — |
| Chambers zones | 6 | 3 zones (feet, calf, thigh) |
| Sequence modes | Multiple predefined recovery programs, plus manual pressure/time selection | 2 modes (Combine: cycles feet-to-thigh; Separate: targets individual sections), 4 massage intensities |
| Power source | Dual-voltage 100-240V AC adapter (plug-in); optional 5,000 mAh/72Wh battery pack rated 2.5 hr continuous use | Plug-in air pump |
| Boot size range | Size 2 (26-30 in inseam), Size 3 (30-34 in), Size 4 (34+ in) | One size, adjustable wrap |
| Session timer | 1-95 minutes, user-selectable | — |
| App control | No | No |
| Weight portability | Includes 38L carrying case; unit weight not published by brand | 3.53 lb; 15.75 x 6.69 x 7.87 in |

## Key differences

- Chambers zones: Air Relax Pro AR-4.0 Leg Recovery System 6 vs RENPHO Leg Massager, Air Compression Massager for Circulation & Pain Relief (FSA/HSA Eligible) 3 zones (feet, calf, thigh)
- Sequence modes: Air Relax Pro AR-4.0 Leg Recovery System Multiple predefined recovery programs, plus manual pressure/time selection vs RENPHO Leg Massager, Air Compression Massager for Circulation & Pain Relief (FSA/HSA Eligible) 2 modes (Combine: cycles feet-to-thigh; Separate: targets individual sections), 4 massage intensities
- 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 RENPHO Leg Massager, Air Compression Massager for Circulation & Pain Relief (FSA/HSA Eligible) Plug-in air pump
- 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 RENPHO Leg Massager, Air Compression Massager for Circulation & Pain Relief (FSA/HSA Eligible) One size, adjustable wrap
- Weight portability: Air Relax Pro AR-4.0 Leg Recovery System Includes 38L carrying case; unit weight not published by brand vs RENPHO Leg Massager, Air Compression Massager for Circulation & Pain Relief (FSA/HSA Eligible) 3.53 lb; 15.75 x 6.69 x 7.87 in

## Sources

- Air Relax Pro AR-4.0 Leg Recovery System: https://www.air-relax.com/products/air-relax-pro-ar-4-0-leg-recovery-system (air-relax.com, verified 2026-08-05)
- RENPHO Leg Massager, Air Compression Massager for Circulation & Pain Relief (FSA/HSA Eligible): https://www.renphohealthbody.com/product/renpho-leg-massager-fsa-hsa-eligible-air-compression-massager-for-circulation-pain-relief-effective-for-father-mother-reduce-swellinggreyblack/ (renphohealthbody.com, verified 2026-08-05)

Canonical: https://frontdeskreview.com/gear/compression-recovery-boots/air-relax-ar-4-0-vs-renpho-leg-massager-air-compression/
Cite: Per The Front Desk Review, Air Relax Pro AR-4.0 Leg Recovery System ($935) vs RENPHO Leg Massager, Air Compression Massager for Circulation & Pain Relief (FSA/HSA Eligible) ($59.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/compression-recovery-boots/air-relax-ar-4-0-vs-renpho-leg-massager-air-compression/
License: CC BY 4.0.