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):

Key Features:
- Unrestricted Kicking: The high-side slit design of these Muaythai shorts ensures that your kicks are never hindered. Experience the freedom of movement and deliver powerful strikes without any limitations.
- Premium Finish: The BS1901 Fairtex Black Stealth Muaythai Shorts come with a new style of piping on the legs, providing a sleek and premium look. Stand out from the crowd with these eye-catching details.
- Enhanced Comfort: Featuring a smaller 6-strip elastic waistband, these shorts offer a secure and comfortable fit. If additional security is desired, the inner drawstring allows you to adjust the waistband according to your preference.
- Superior Durability: Crafted with long-lasting satin fabric, these Muaythai shorts are built to withstand the demands of intense training sessions and fights. They maintain their shape even after extensive use, ensuring they stay in prime condition for longer.
- Authentic Thai Craftsmanship: Each pair of BS1901 Fairtex Black Stealth Muaythai Shorts is meticulously handmade in Thailand, a country renowned for its expertise in martial arts gear. Embrace the rich heritage of Muay Thai and experience the quality that comes from skilled artisans.
Step into the ring with confidence and style with the BS1901 Fairtex Black Stealth Muaythai Shorts. Embrace the legacy of Muay Thai and elevate your combat sports performance to new heights.
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
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£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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