Use the chart below to convert between US, UK, EU and JP sizes.
Men
US
UK
EU
JP (cm)
6
5.5
38.5
24
6.5
6
39
24.5
7
6
40
25
7.5
6.5
40.5
25.5
8
7
41
26
8.5
7.5
42
26.5
9
8
42.5
27
9.5
8.5
43
27.5
10
9
44
28
10.5
9.5
44.5
28.5
11
10
45
29
11.5
10.5
45.5
29.5
12
11
46
30
13
12
47.5
31
Women
US
UK
EU
JP (cm)
5
2.5
35.5
22
5.5
3
36
22.5
6
3.5
36.5
23
6.5
4
37.5
23.5
7
4.5
38
24
7.5
5
38.5
24.5
8
5.5
39
25
8.5
6
40
25.5
9
6.5
40.5
26
9.5
7
41
26.5
10
7.5
42
27
11
8.5
43
28
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14-day returns for store credit & equal-value exchanges — policy
Size, price & UPC details
Size
Price
UPC
Delivery
XS
—
623555497325
Out of stock
S
—
623555497332
Out of stock
M
—
623555497226
Out of stock
L
—
623555497233
Out of stock
XL
—
623555497257
Out of stock
2XL
—
623555706212
Out of stock
One Size
$425.00
—
3-4 business days
About the Arc'teryx Gamma MX Jacket Black
The Arcteryx Gamma MX Jacket Black delivers the same trusted softshell performance as its hooded counterpart but in a more streamlined silhouette. The all Black finish gives it a sharp and minimal presence, emphasizing the precise paneling and articulated fit that define the Gamma MX series. Without the hood, the structure feels slightly more tailored while still maintaining full range of motion. Fans of Arcteryx know the Gamma MX name stands for dependable weather resistance and comfort during high output activity. This version keeps the focus squarely on versatility, making it a favorite for layering under heavier shells or wearing solo in mild conditions. Its understated design reinforces the brand reputation for building pieces that prioritize function without sacrificing aesthetic discipline. The Arcteryx Gamma MX Jacket Black was released with a retail price of $350.