Size requirements
| Measurement | Required range |
| Height | 5'1" – 6'6" (155 – 198 cm) |
| Weight | Under 265 lbs (120 kg) |
| Waist | 25.6" – 57.1" (65 – 145 cm) |
| Thigh | 15.7" – 31.5" (40 – 80 cm) |
No minimum weight – the device works for lighter users as long as height is within range.
How to measure correctly
| Measurement | How to measure |
| Height | Barefoot, standing straight against a wall |
| Weight | Standard scale, light clothing |
| Waist | Around lower abdomen (just above hip bones) |
| Thigh | Around widest part of upper leg, standing |
Use a soft measuring tape – not a metal one.
Leg length (if required for your model)
| Method | Instructions |
| Standing | Measure from hip bone to knee, then knee to ankle |
| Sitting | Sit upright, measure from hip joint to floor |
Check your product manual – some models don't require separate leg length.
What if I'm close to the limit?
| Within... | Verdict |
| 0.5" of height limit | ✅ Likely fine – straps have buffer |
| 5 lbs of weight limit | ⚠️ Caution – start with short sessions |
| Outside either limit | ❌ Do not use – safety cannot be guaranteed |
What if I'm close to the limit?
| Within... | Verdict |
| 0.5" of height limit | ✅ Likely fine – straps have buffer |
| 5 lbs of weight limit | ⚠️ Caution – start with short sessions |
| Outside either limit | ❌ Do not use – safety cannot be guaranteed |