This model has 4 reviewed size combinations with adjustable leg loops. Match both body measurements to one row; the model name and generation matter more than a familiar letter size.
CORAX covers two broad, overlapping size bands. LUNA divides the chart into four closer waist bands while retaining adjustable leg loops. CORAX uses numbered sizes 1 and 2; LUNA uses XS through L. These labels do not convert between models. Check both waist and thigh against the row for the exact model: CORAX can leave two sizes compatible, while LUNA can expose a waist–thigh mismatch.
Use the exact source model shown here. A similarly named successor, a different regional listing or another manufacturer's size with the same label is not automatically covered. These are published dimensional ranges, not measurements of a harness under load.
Keep every row containing both measurements as a candidate. A value exactly on a published endpoint remains inside the inclusive range. Distance from the endpoint is a chart fact, not a comfort rating. Do not automatically choose the middle of a range or size down to eliminate an overlap.
If only your waist or thigh fits
Recheck both measurements in the intended clothing. A waist match cannot compensate for a thigh outside the model's stated range. Compare a different model or consult a qualified shop; the calculator does not bridge a gap or extrapolate a missing size.
Confirm the physical fit
If two CORAX sizes match, compare buckle position and gear-loop balance during a controlled hang test. For LUNA, do not move up or down on waist alone. Check the exact manufacturer's buckle instructions, waist-belt retention above the hips, rise and movement. Complete a controlled weighted hang test in a shop or gym before relying on the shortlist.
Source and review scope
Earliest review date among this model's rows: . Read the manufacturer source. A recent source check confirms the published numbers, not physical fit or current retail stock. See the full source register for other models.