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Helikon-Tex
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The Helikon-Tex MCDU DyNyCo trousers trace their lineage to the classic military paratrooper trousers of the 1950s, reworked in DyNyCo fabric — a treated Nylon-Cotton blend — designed for operators, shooters, and users who work or move under demanding conditions. The cut is that of a fully functional tactical trouser, with a pocket layout built around active use rather than appearance.
The most significant trade-off in this model lies in the balance between protection and mobility. The knees and seat are reinforced with Cordura 500D, a technical fabric with very high abrasion resistance that holds up under prolonged contact with hard surfaces, gravel, and concrete. At the same time, Versastretch panels integrated at the waist, groin, and back of the knees give way where flexibility is needed: those moving across rough terrain or dropping into low shooting positions gain freedom of movement without compromising the structural integrity of the main fabric. Versastretch also dries quickly, which reduces discomfort in light rain or heavy sweating — though this is not a waterproof garment.
The thigh cargo pockets are accessed via a zip covered by a flap, a solution that balances content security with quick access on the move. The front pockets have reinforced edges, useful for those who carry a clip knife without wearing through the fabric over time. Dedicated pistol magazine pockets, front and rear cargo pockets, rear pockets, and calf pockets are all included. The front opening combines Velcro and a traditional metal zip, and the belt loops accept belts up to 40 mm wide, compatible with most tactical belts in common use. The rear pockets have no closure mechanism: handy for a wallet in controlled environments, less suited to situations where losing items is a real risk.
Key points
- Cordura 500D reinforcement on the knees and seat protects during prone shooting positions and movement over abrasive surfaces.
- Versastretch panels at the waist, groin, and back of the knees maintain full mobility without loosening the structure of the trouser.
- Integrated knee pad pockets allow protective inserts to be fitted without additional accessories, with minimal impact on the overall profile.
- The 40 mm belt loops are compatible with standard tactical belts, no adapters required.
- The ventilation mesh between the pockets reduces heat build-up in the warmest areas during extended use.
- The zip-and-flap cargo pockets provide secure access to contents even during fast movement or compromised positions.
In the box
- Helikon-Tex MCDU DyNyCo Trousers
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.






