Fit note: This style runs small. If you are between sizes, we recommend choosing the larger size for a comfortable fit. The harness is one size and fits most.

Size by Body (Weight & Waist)

Size Weight (kg) Weight (lb) Waist (cm) Waist (in)
M 45–55 99–121 68–70 27–28
L 55–65 121–143 72–74 28–29
XL 65–75 143–165 76–78 30–31
XXL 75–90 165–198 80–82 31–32

Flat Measurements

Measurement M L XL XXL
Waist – cm (in) 68
(27)
72
(28)
76
(30)
80
(31)
Side length – cm (in) 17
(6.7)
18
(7.1)
19
(7.5)
20
(7.9)
Waist stretched – cm (in) 120
(47)
124
(49)
128
(50)
132
(52)

Measured flat; there may be a slight variance of 1–2 cm.

Quick Size Guide (Weight × Height)

Height ↓ / Weight → 45kg
99lb
50kg
110lb
55kg
121lb
60kg
132lb
65kg
143lb
70kg
154lb
75kg
165lb
80kg
176lb
85kg
187lb
90kg
198lb
160–165cm
5'3"–5'5"
M M M L XL XL XXL XXL
165–170cm
5'5"–5'7"
M M M L XL XL XXL XXL XXL
170–175cm
5'7"–5'9"
M M M L L XL XL XXL XXL
175–180cm
5'9"–5'11"
M M L L XL XL XXL XXL XXL
180–185cm
5'11"–6'1"
M L L L XL XL XXL XXL XXL
185–190cm
6'1"–6'3"
L L L XL XL XXL XXL XXL

M    L    XL    XXL

Harness Sizing

The X-back harness is one size, made from stretch elastic that fits most chest sizes comfortably.

How to measure: Wrap a soft tape measure around your natural waistline, where you normally wear your underwear. Keep the tape snug but not tight. If your weight and height point to different sizes, size up for comfort.