Two different sizing systems

Arc'teryx
size chart.

What changes by model

Skaha Men's / Lithos SL

Lithos SL combines waist-belt and leg-loop components, producing twelve reviewed combinations. Skaha Men's uses five conventional fixed-loop sizes.

For Lithos SL, read the component labels as a pair—not as a single clothing size. Skaha Men's needs the same exact waist-and-thigh check as any fixed-loop harness.

Reviewed model

Skaha Men's

5 size rules

Size	Waist	Thigh	Leg loops	Listed uses
XS	71–76 cm	50–53 cm	fixed	gym, sport, trad, multipitch
S	76–84 cm	53–56 cm	fixed	gym, sport, trad, multipitch
M	84–91 cm	56–60 cm	fixed	gym, sport, trad, multipitch
L	91–101 cm	60–66 cm	fixed	gym, sport, trad, multipitch
XL	101–109 cm	66–71 cm	fixed	gym, sport, trad, multipitch

Manufacturer source ↗

Reviewed model

Lithos SL

12 size rules

Size	Waist	Thigh	Leg loops	Listed uses
1 / A	64.5–72 cm	50–54 cm	fixed	sport
1 / B	64.5–72 cm	51–55 cm	fixed	sport
2 / A	71.5–79 cm	50–54 cm	fixed	sport
2 / B	71.5–79 cm	54–58 cm	fixed	sport
3 / A	78.5–86 cm	53–57 cm	fixed	sport
3 / B	78.5–86 cm	58–62 cm	fixed	sport
4 / A	85.5–93 cm	57–61 cm	fixed	sport
4 / B	85.5–93 cm	62.5–66.5 cm	fixed	sport
5 / A	92.5–100 cm	61.5–65.5 cm	fixed	sport
5 / B	92.5–100 cm	68–72 cm	fixed	sport
6 / A	99.5–107 cm	67–71 cm	fixed	sport
6 / B	99.5–107 cm	68–72 cm	fixed	sport

Manufacturer source ↗

Use both dimensions

Turn the chart into a shortlist.

Confirm that the selected Lithos component pairing is the one physically supplied or assembled. Always complete the manufacturer's fitting checks.

Enter waist + thigh →

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