Fairtex rashguards are designed as compression-fit MMA, BJJ and grappling base layers — the cut sits tight to the body so it doesn't shift under a gi or fight shorts. Sizes XS through 3XL are unisex. Pick by chest circumference; the rest of the measurements are reference points for length and reach.
Fairtex Rashguard Size Chart (RG8 Short Sleeve, RG9 Long Sleeve)
Flat-garment measurements in inches. Chest is the half-chest × 2 (full circumference). Sleeve length is measured from the centre back of the neck along the shoulder and down the arm.
| Size | Neck (in) | Chest (in) | Sleeve (in) | Bicep (in) | Length (in) | Hem (in) |
|---|---|---|---|---|---|---|
| XS | 15.6 | 33.9 | 24 | 6.3 | 23.2 | 30.7 |
| S | 16.5 | 35 | 24.8 | 6.3 | 24.4 | 32.7 |
| M | 17.3 | 36.2 | 26.8 | 6.5 | 25.6 | 34.4 |
| L | 18.3 | 37.8 | 27.2 | 6.9 | 26.8 | 36.2 |
| XL | 19.1 | 39 | 27.6 | 7.3 | 28 | 38.2 |
| 2XL | 20.1 | 40.2 | 28 | 7.9 | 28 | 39.2 |
| 3XL | 21.1 | 41.3 | 28.3 | 8.3 | 29.1 | 41.1 |
How to measure
- Chest: measure around the fullest part of your chest, tape level under the arms.
- Sleeve length: measure from the centre back of your neck, across the shoulder and down to your wrist.
- Length: from the high point of the shoulder seam to the hem.
Fit notes
- Rashguards are designed for compression fit — they should feel close to the skin without restricting movement. If you're between two sizes, the smaller size delivers the support a rashguard is built for; size up only if you want a looser, t-shirt-style wear.
- The fabric is anti-bacterial Nylon/Spandex with quick-dry properties — it stretches with your range of motion and recovers shape after washing.
- RG8 short sleeve and RG9 long sleeve use the same body measurements; only sleeve length and total length differ between cuts.
For more no-gi and grappling apparel, see the full Fairtex collection — matching fight shorts, MMA gloves and BJJ gear share consistent sizing.
