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Helikon-Tex
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The MBDU Shirt is an anatomically cut combat shirt designed for operators and shooters who need full freedom of movement without giving up functionality. The main fabric is a NyCo Ripstop — a reinforced-weave nylon-cotton blend — combined with VersaStretch side panels, a four-way stretch material that moves with the arms and torso without creating pressure points or unwanted bunching.
The standard collar converts to a high, closed configuration via a velcro system: a practical solution when wearing neck protection or when minimising skin exposure. Mesh panels in the armpits improve airflow in the highest heat-output areas, partially offsetting the density of the NyCo Ripstop — which is not a quick-dry technical fabric, but offers greater abrasion and tear resistance than lightweight synthetics. Those who prioritise maximum lightness and moisture management need to weigh this trade-off; those who value durability and seam integrity will find it works directly in their favour.
On the chest, two large YKK-zip pockets with loop panels for overlapping patches; on the sleeves, zip pockets on the bicep with an internal dummy cord ring, large loop panels for identification patches, and smaller panels dedicated to flags or IFF patches. A rank tab at the centre chest and snap buttons complete a configuration built for operational use. Cuffs adjust with velcro closure to fit over gloves.
Key features
- VersaStretch side panels provide full freedom of movement even when a plate carrier or chest rig is worn over the top
- Convertible velcro collar: switches from open to high-and-closed configuration without any tools
- YKK zippers on all pockets for long-term reliability under heavy use
- Mesh in the armpits to increase ventilation where it matters most
- Loop panels on chest and biceps for patches, flags and IFF identifiers without additional stitching
- Snap buttons with greater resistance to lateral loads than standard press-studs
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.






