Fairtex Muay Thai Shorts Size Guide
Fairtex publishes two related size charts depending on cut. BS19xx and X-series shorts use the modern Muay Thai cut. BS17xx shorts use the older slim cut, which sits a touch slimmer through the hip. Measurements below are flat-garment dimensions in inches. Pick by approximate body waist; the elasticated waistband flexes for comfort.
BS19xx and X-series (modern cut)
| Size | Waistband width (in) | Approximate waist (in) | Side length (in) | Leg opening (in) |
|---|---|---|---|---|
| XS | 12 | 24 | 13 | 10.5 |
| S | 13 | 26 | 14 | 11 |
| M | 14 | 28 | 14.5 | 11.5 |
| L | 15 | 30 | 15 | 12 |
| XL | 16 | 32 | 15.5 | 12.5 |
| XXL | 17 | 34 | 16 | 13 |
| XXXL | 18 | 36 | 16.5 | 13.5 |
| XXXXL | 19 | 38 | 17 | 14 |
| XXXXXL | 20 | 40 | 17.5 | 14.5 |
BS17xx slim cut
| Size | Waistband width (in) | Approximate waist (in) | Side length (in) | Leg opening (in) |
|---|---|---|---|---|
| XS | 12 | 24 | 13 | 10.5 |
| S | 13 | 26 | 13.5 | 11.5 |
| M | 14 | 28 | 14 | 12 |
| L | 15 | 30 | 14.5 | 12.5 |
| XL | 16 | 32 | 15 | 13 |
| XXL | 17 | 34 | 15.5 | 13.5 |
| XXXL | 18 | 36 | 16 | 14 |
How to choose your size
- Waist — measure around your natural waistline and match the result to the "Approximate waist" column.
- Between sizes — size up for a roomier feel through the hips, especially for kicking and clinch.
- Cut difference — slim-cut BS17xx sits closer to the leg with shorter side length; modern BS19xx gives a touch more length and a slightly wider leg opening. Both work for traditional Muay Thai movement.
- Fit note — Thai-cut shorts run shorter and wider at the leg than gym shorts, by design. The wide leg gives full hip rotation.
Modern cut chart:

Slim cut chart (BS17xx):

The Fairtex BS1937 Acid Jazz Muay Thai Shorts White are designed with a high side slit for unrestricted kicking. Made from durable satin fabric that maintains its shape, they feature new style piping for a premium finish. These shorts include a smaller 6-strip elastic waistband with an inner drawstring for a secure fit.
- Durable satin fabric
- Slim cut fit
- High side slit
- 6-strip elastic waistband with inner drawstring
- Handmade in Thailand
Manufactured by: Fairtex
Product Type: Muay Thai Shorts
Gender: Mens
Material: Satin
Origin: Thailand
£4.99 FREE - Spend over £75 (*Mainland UK only) - Delivered within 3 working days - Estimated delivery date provided at checkout - Tracking number available once shipped
£9.99 - Delivered next working day - Estimated delivery date provided at checkout - Tracking number available once shipped - Subject to order cut off times. *Order before 12pm.
£23.99 - Delivered within 4 working days - Estimated delivery date provided at checkout - Tracking number available once shipped - Destinations include Northern Ireland, Scottish Highlands and Channel Islands.
from £20 - For orders over 100cm in length or 30kg in weight. - Oversized items are not eligible for free delivery - Total cost calculated at checkout. Please check dimensions and weight are suitable before completing your order to save any unexpected returns costs.
Easy Returns available on all UK mainland orders via our returns centre - Please complete the returns form in full and send your order back to us via your selected method. - Returns will be processed within 7-14 days of receipt - If your order is oversized please contact us to arrange an alternative returns method. For more information view our returns policy.
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