Air Relax PRO 4.0 Compression Therapy System

The Air Relax PRO 4.0 is an intermittent pneumatic compression system with 14 pressure levels, four massage modes and a touch interface. According to the model manual, pressure is adjustable from 40 to 170 mmHg.

It has 6 overlapping chambers and pressure sensors. According to its manual, it is intended for the temporary relief of minor muscle aches and pains and a temporary increase in circulation in the treated area, in people in good health.

The manual describes it as a system for consumer home use and warns that commercial use will cause premature wear.

Key features:

✅ Programmable compression: four modes (sequential, progressive, drainage and overlay), 14 levels from 40 to 170 mmHg and sessions from 5 to 95 minutes
✅ Perceived recovery: the best-documented effect of this technique is a reduction in perceived muscle soreness after exercise
✅ Comfort and technology: touch screen, pressure sensors, 6 overlapping chambers and a 100–240 V input

What intermittent pneumatic compression is used for:

• Temporarily increasing circulation in the treated area
• Reducing perceived muscle soreness after training
• Supporting recovery between training sessions or long periods on your feet
• Supporting muscle relaxation at the end of the day

What the evidence says. The reference review on sports recovery (Maia et al., 2024; 17 studies, 319 participants) reports trivial-to-small effects on muscular function and identifies reduced perceived soreness as the most consistent effect; its authors state that the technique still lacks strong scientific support. We have found no evidence that intermittent pneumatic compression on its own produces weight loss, fat loss or the removal of cellulite.

Before you use it. According to the model manual, do not use it with inflammation, infection, open wounds or bleeding at or near the site of application; on sensitive skin, swollen or inflamed areas or skin eruptions, or with poor circulation or unexplained calf or abdominal pain; if you are under the care of a doctor or pregnant; if you have blood clots or a tendency to form them; or in cases of acute pulmonary oedema, acute thrombophlebitis, acute congestive heart failure, acute infection, osteoporosis, deep vein thrombosis, pulmonary embolism, or fractures, dislocations, lesions or tumours at the site. It is not recommended for people with heart or vascular problems and is not suitable for children. The manual recommends sessions of 15 to 30 minutes before training and 30 to 45 minutes after, and not exceeding 100 mmHg with the arm sleeve or the shorts. If pain, discomfort, bruising, irritation or redness appears, stop using it and consult your doctor.

Specifications – Air Relax PRO 4.0

Pressure, session length and voltage come from the AR-4.0 model manual. Please check the documentation supplied with your unit.

Size chart – Compression boots