| Size |
Head Circumference (cm) |
| 2XS | 54-55 |
| XS | 55-56 |
| S | 57-58 |
| M | 58-59 |
| L | 60-61 |
| XL | 61-62 |
| 2XL | 63-64 |
| 3XL | 65-66 |
| 4XL | 67-68 |
| Size |
Chest (cm) |
Waist (cm) |
Height (cm) |
| XS | 86-91 | 71-76 | 165-170 |
| S | 91-97 | 76-81 | 170-175 |
| M | 97-102 | 81-86 | 175-180 |
| L | 102-107 | 86-91 | 180-185 |
| XL | 107-112 | 91-97 | 185-190 |
| 2XL | 112-117 | 97-102 | 190-195 |
| 3XL | 117-122 | 102-107 | 195-200 |
| Size |
Hand Circumference (cm) |
| XS | 17-18 |
| S | 19-20 |
| M | 21-22 |
| L | 23-24 |
| XL | 25-26 |
| 2XL | 27-28 |
| EU |
US Mens |
US Womens |
Foot Length (cm) |
| 38 | 5.5 | 7 | 24.1 |
| 39 | 6.5 | 8 | 24.8 |
| 40 | 7 | 8.5 | 25.4 |
| 41 | 8 | 9.5 | 26.0 |
| 42 | 8.5 | 10 | 26.7 |
| 43 | 9.5 | 11 | 27.3 |
| 44 | 10 | 11.5 | 27.9 |
| 45 | 11 | 12.5 | 28.6 |
| 46 | 12 | 13.5 | 29.2 |
| 47 | 13 | 14.5 | 29.8 |
| Size |
Chest (cm) |
Length (cm) |
| XS | 86-91 | 68 |
| S | 91-97 | 70 |
| M | 97-102 | 72 |
| L | 102-107 | 74 |
| XL | 107-112 | 76 |
| 2XL | 112-117 | 78 |
| 3XL | 117-122 | 80 |
Some FastLap Supply tees run oversized and boxy — size down for a fitted look.
| Size |
Chest (cm) |
| XS | 86-91 |
| S | 91-97 |
| M | 97-102 |
| L | 102-107 |
| XL | 107-112 |
| 2XL | 112-117 |
| 3XL | 117-122 |
Sparco and European brand jackets run slim and euro-cut — size up if between sizes or you prefer a relaxed fit.
| EU |
US Mens |
US Womens |
| 38 | 5.5 | 7 |
| 39 | 6.5 | 8 |
| 40 | 7 | 8.5 |
| 41 | 8 | 9.5 |
| 42 | 8.5 | 10 |
| 43 | 9.5 | 11 |
| 44 | 10 | 11.5 |
| 45 | 11 | 12.5 |
| 46 | 12 | 13.5 |
| 47 | 13 | 14.5 |
