
Helikon-Tex Cobra D-Ring FX45 Nylon Belt 45 mm
Helikon-Tex
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The Cobra D-Ring FX45 is a tactical belt made from 45 mm wide nylon webbing, fitted with the patented AustriAlpin® Cobra® FX45 buckle. It is designed for those who need a steplessly adjustable belt — no holes — suitable for everyday use with tactical clothing, uniform, or light operational gear.
The AustriAlpin® Cobra® buckle is the defining feature of this construction: the dual-release mechanism allows fast, secure one-handed opening, while the front D-ring lets you attach accessories, carabiners, or safety systems without removing the belt. The closure is heavily over-engineered relative to its role as a simple belt, which gives it structural integrity even under sustained lateral load.
The hole-free adjustment system lets you dial in the fit to the millimetre within the chosen size, eliminating the slack typical of fixed-hole belts. Sizes run from 110 cm (S) to 160 cm (XXXL), covering a wide range of body types and allowing use over bulky outer layers. The trade-off to keep in mind: the Cobra buckle adds robustness and smooth operation, but also thickness and weight compared to a simple friction buckle — the right choice for those who want mechanical reliability, not for those chasing the lightest possible belt.
Key features
- AustriAlpin® Cobra® FX45 buckle with one-handed quick release and front D-ring for accessories and carabiners.
- 45 mm wide nylon webbing: compatible with most belt loops on tactical and cargo trousers.
- Stepless hole-free adjustment: fits precisely to your body shape or whatever you are wearing underneath.
- Available in six sizes from 110 cm to 160 cm: suitable for wearing over a vest or thermal layer.
- Abrasion-resistant nylon construction built for prolonged use in operational conditions.
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.






