Airframe Pro
| Size |
Circumference (in) |
Circumference (cm) |
Hat Size |
| 2XS |
20 1/8" - 20 1/2" |
51 - 52 |
6 3/8 - 6 1/2 |
| XS |
20 7/8" - 21 1/4" |
53 - 54 |
6 5/8 - 6 3/4 |
| S |
21 5/8" - 22" |
55 - 56 |
6 7/8 - 7 |
| M |
22 3/8" - 22 3/4" |
57 - 58 |
7 1/8 - 7 1/4 |
| L |
23 1/8" - 23 1/2" |
59 - 60 |
7 3/8 - 7 1/2 |
| XL |
24" - 24 3/8" |
61 - 62 |
7 5/8 - 7 3/4 |
| 2XL |
24 3/4" - 25 1/8" |
63 - 64 |
7 7/8 - 8 |
| 3XL |
25 1/2" - 26" |
65 - 66 |
8 1/8 - 8 1/4 |
Airflite / Airform / Domain / Ultraflite / Variant Pro
| Size |
Circumference (in) |
Circumference (cm) |
Hat Size |
| XS |
20 7/8" - 21 1/4" |
53 - 54 |
6 5/8 - 6 3/4 |
| S |
21 5/8" - 22" |
55 - 56 |
6 7/8 - 7 |
| M |
22 3/8" - 22 3/4" |
57 - 58 |
7 1/8 - 7 1/4 |
| L |
23 1/8" - 23 1/2" |
59 - 60 |
7 3/8 - 7 1/2 |
| XL |
24" - 24 3/8" |
61 - 62 |
7 5/8 - 7 3/4 |
| 2XL |
24 3/4" - 25 1/8" |
63 - 64 |
7 7/8 - 8 |
| 3XL |
25 1/2" - 26" |
65 - 66 |
8 1/8 - 8 1/4 |
Elsinore
| Size |
Circumference (in) |
Circumference (cm) |
Hat Size |
| XS |
21 1/4" - 21 5/8" |
54 - 55 |
6 5/8 - 6 3/4 |
| S |
21 5/8" - 22" |
55 - 56 |
6 7/8 - 7 |
| M |
22 1/2" - 22 7/8" |
57 - 58 |
7 1/8 - 7 1/4 |
| L |
22 7/8" - 23 1/4" |
58 - 59 |
7 3/8 - 7 1/2 |
| XL |
23 5/8" - 24" |
60 - 61 |
7 5/8 - 7 3/4 |
| 2XL |
24 3/8" - 24 3/4" |
62 - 63 |
7 7/8 - 8 |
| 3XL |
25 1/4" - 25 5/8" |
64 - 65 |
8 1/8 - 8 1/4 |
Sizing information is provided by the manufacturer and does not guarantee a perfect fit. Please use this chart as a guide only.