In order to determine the best R.M.Williams size for you, please measure carefully following the instructions stated below. Shoes are available to purchase in UK sizes; please see the Footwear Size Guide for European sizing.

MEN'S OUTERWEAR, SHIRTS AND POLO'S SIZE GUIDE
Product Size |
S |
M |
L |
XL |
XXL |
UK/US |
38 |
40 |
42 |
44 |
46 |
EU |
46 |
48 |
50 |
52 |
54 |
Neck (cm) |
38.1 |
39.4 |
40.6 |
41.9 |
43.2 |
Neck (inches) |
15 |
15.5 |
16 |
16.5 |
17 |
Chest (cm) |
91.4 |
96.5 |
101.6 |
106.7 |
111.7 |
Chest (inches) |
36 |
38 |
40 |
42 |
44 |
MEN'S JEANS SIZE GUIDE
Product Size (waist - inches) |
32 |
33 |
34 |
35 |
36 |
37 |
38 |
39 |
40 |
42 |
44 |
Waist (cm) |
81 |
84 |
86 |
89 |
92 |
94 |
97 |
99 |
102 |
107 |
112 |
INSIDE LEG MEASUREMENTS
Leg Length |
Short |
Regular |
Long |
Inches |
30 |
32 |
35 |
MEN'S FOOTWEAR SIZE GUIDE
Product Size (UK) |
8 |
8.5 |
9 |
9.5 |
10 |
10.5 |
11 |
11.5 |
12 |
EU |
42 |
43 |
43.5 |
44 |
45 |
45.5 |
46 |
46.5 |
47 |
US |
9 |
9.5 |
10 |
10.5 |
11 |
11.5 |
12 |
12.5 |
13 |
MEN'S WIDTH FITS
Size |
F |
G |
H |
Fit |
Narrow |
Regular |
Wide |
WOMEN'S FOOTWEAR SIZE GUIDE
Product Size (UK) |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
6 |
6.5 |
7 |
7.5 |
8 |
EU |
35 |
36 |
36.5 |
37 |
38 |
38.5 |
39 |
40 |
41 |
41.5 |
42 |
US |
5.5 |
6 |
6.5 |
7 |
7.5 |
8 |
8.5 |
9 |
9.5 |
10 |
10.5 |
WOMEN'S WIDTH FITS
Size |
D |
E |
Fit |
Regular |
Wide |