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.
Complete your kit
-
Fumetsu Origins Fight Shorts Navy
£34.99Unit price /Unavailable
Description
Description
Engineered to handle the heat of mat work, the Fairtex RG8 Short Sleeve Rash Guard in Black gives you a tight, low-friction layer that stays out of your way on the ground. Crafted from a polyester and spandex blend, this rash guard wicks sweat fast, dries quickly, and stretches with every scramble.
The compressive cut hugs the torso without rolling up under a Gi or no-Gi top, while the flatlock seams sit flush against the skin to prevent chafing during hard sparring rounds.
Main Features:
- Polyester and spandex blend for stretch, recovery, and fast moisture wicking
- Flatlock seams that stay smooth against the skin during ground work
- Compressive fit that won't bunch under a Gi or rashguard top
- Handmade in Thailand for authentic craftsmanship
- Built for BJJ, MMA, and grappling-heavy training environments
Find more options in our Fairtex collection or browse the full rash guard range.
Specifications
Specifications
- Product type
- Rashguards
- Material
- Polyester/Spandex
- Gender
- Unisex
Delivery & returns
Delivery & returns
UK delivery: standard £4.99, or free on qualifying orders of £75 or more. Express £9.99 where available. These rates apply to normal goods; oversized items and items shipped separately may have different charges.
Check the delivery options and estimated dates shown at checkout. View delivery & returns.
Returns & exchanges
Items must be returned within 30 days of purchase, unused, unsoiled and in resellable condition, in their original packaging with all tags attached. Hygiene exclusions apply; see our refund policy for full terms.
Start your return or exchange in our returns portal. Enter your order number and email address or postcode, select the items, and follow the instructions provided after approval. Use the return address and shipping instructions supplied for your order.
For oversized items or if you need help arranging a return, contact us before sending the item back. Return methods and any applicable charges are provided during the returns process.
Refunds
After we receive and inspect your return, we will notify you of your refund status. Once approved, your refund should appear in your account within 5–7 working days. See our refund policy for exchanges, exclusions and full terms.
About the Fairtex Brand
About the Fairtex Brand
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