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Helikon-Tex
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The Helikon-Tex MCDU NYCO trousers are tactical trousers made from NyCo fabric — a nylon-cotton blend — available in MultiCam, designed for dynamic shooters, hunters and operators who need a durable and comfortable garment during extended field use. The cut draws from 1950s parachutist trouser geometry, with a fit engineered for freedom of movement under load.
NyCo combines nylon's abrasion resistance with cotton's breathability and softness. On its own, however, it would not hold up at the highest-stress points: the knees and seat are therefore reinforced with Cordura 500D, which offers significantly greater resistance to wear from contact with hard surfaces. Versastretch panels at the waist, groin and back of the knee resolve the classic trade-off between durability and mobility: where the main fabric is stiffer and more hardwearing, the Versastretch gives in the direction of movement and dries faster, preventing moisture from building up precisely where the trousers are working hardest.
The closure combines a dry zip with a traditional metal zip, and the belt loops accept belts up to 40 mm wide, compatible with most tactical belt systems. The front cargo pockets are accessed via flap zip, while side and rear pockets complete the storage layout. Mesh panels between the pockets promote airflow towards the interior, reducing heat build-up in covered areas. The dedicated knee pad pocket keeps the trousers compatible with most aftermarket knee pads, holding them in place without shifting during movement.
Key features
- Cordura 500D reinforcements at knees and seat: the areas subject to the greatest wear resist repeated contact with abrasive surfaces without affecting overall fit.
- Versastretch inserts at waist, groin and back of knee: they give in the direction of movement and dry faster than the main NyCo fabric, maintaining comfort even after intense effort.
- Belt loops for 40 mm belts: compatible with standard tactical belts without adapters.
- Internal knee pad pocket: allows removable pads to be inserted and kept in position during dynamic use.
- Multiple pocket system with mesh panels: cargo, side, rear and calf pockets provide distributed storage capacity; mesh panels limit heat build-up in covered areas.
- MultiCam colourway: a versatile camouflage pattern recognised for its effectiveness in mixed vegetation and open terrain environments.
Specifications
Sizes
TROUSER SIZE GUIDE
The Viper trouser size listed on the site refers to the waist measurement in inches. To find the right size, simply check which waist measurement corresponds to your size. For example, an Italian size 46 corresponds to a 32" waist, so you should select size 32 on the site. You can also choose to measure your own waist and select the corresponding size. If your waist measurement is 90 cm, for instance, you should select the corresponding size in inches, which is 36". Contact us via chat or email with any questions. The size shown on the site corresponds to the waist measurement in inches.
| International | VIPER SIZE (waist in inches) |
Waist in CM | UK | FR | IT | ESP |
|---|---|---|---|---|---|---|
| XXS | 26-28 | 66-71 | 32 | 38 | 42 | 36 |
| XS | 28-30 | 71-76 | 34 | 40 | 44 | 40 |
| S | 30-32 | 76-81 | 36 | 42 | 46 | 44 |
| M | 32-34 | 81-86 | 38 | 44 | 48 | 48 |
| L | 34-36 | 86-91 | 40 | 46 | 50 | 52 |
| XL | 36-38 | 91-96 | 42 | 48 | 52 | 56 |
| XXL - 2XL | 38-40 | 96-101 | 44 | 50 | 54 | 60 |
| XXXL - 3XL | 40-41 | 100-104 | 46 | 52 | 56 | 64 |
| XXXXL - 4XL | 41-43 | 105-109 | 48 | 54 | 58 | 68 |
FOOTWEAR SIZE GUIDE
| TYPE | SIZES | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| EU/IT | 38 | 38.5 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46.5 | 48.5 |
| UK | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 10 | 11 | 12 | 13.5 |
| USA | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 10.5 | 11.5 | 12.5 | 14 |
| JP | 24 | 24.5 | 25 | 25.5 | 26 | 26.5 | 27.5 | 28.5 | 29.5 | 30.5 | 31.5 |
| MEX | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 9 | 10 | 11 | 12.5 |
| BR | 36 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 46 |
| AU | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 10 | 11 | 12 | 13.5 |
Marca
Helikon-Tex
Technical clothing, field equipment and carry systems by Helikon-Tex. It is the most represented brand in the catalogue for outdoor and tactical gear, with over seven hundred product references.






