Broad adjustment or closer increments

Petzl
size chart.

What changes by model

CORAX / LUNA

CORAX covers two broad, overlapping size bands. LUNA divides the chart into four closer waist bands while retaining adjustable leg loops.

Start with both measurements: CORAX can leave more than one compatible size, while LUNA can expose a waist–thigh mismatch despite a familiar letter size.

Reviewed model

CORAX

2 rules

Size	Waist	Thigh	Leg loops	Listed uses
1	65–96 cm	48–59 cm	adjustable	gym, sport, multi-pitch, via ferrata
2	76–107 cm	54–67 cm	adjustable	gym, sport, multi-pitch, via ferrata

Manufacturer source ↗

Reviewed model

LUNA

4 rules

Size	Waist	Thigh	Leg loops	Listed uses
XS	65–71 cm	46–56 cm	adjustable	sport, trad, multi-pitch, ice, mountaineering
S	71–77 cm	51–61 cm	adjustable	sport, trad, multi-pitch, ice, mountaineering
M	77–84 cm	54–64 cm	adjustable	sport, trad, multi-pitch, ice, mountaineering
L	84–92 cm	56–66 cm	adjustable	sport, trad, multi-pitch, ice, mountaineering

Manufacturer source ↗

Use both dimensions

Turn the chart into a shortlist.

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.

Enter waist + thigh →

US-market dataset v0.1.0 · Reviewed 2026-07-20 · Next review 2026-10-20