Helikon-Tex Alpha Tactical Fleece Jacket
Helikon-Tex
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The Alpha Tactical is a thermal fleece jacket designed as a mid-layer for shooters, operators and anyone spending hours outdoors in cold conditions. Weighing 630 g, it balances insulation and packability: it compresses small enough to fit in a pack pocket and is ready to wear within seconds. The construction is an evolved version of the original Alpha, with additional velcro panels on the sleeves for attaching kit without removing the jacket.
The layering concept is the defining feature of this model. The fleece functions as the insulating layer in the Urban Tactical line, designed to be worn under a softshell or hard-shell when temperatures drop, or on its own during transitional seasons. The mesh lining on the inner surface improves glide over base layers and prevents the fleece from clinging to the skin, keeping comfort during movement. The high collar and chin guard on the front YKK zip eliminate cold spots in the most exposed areas without needing an additional layer at the neck.
The pocket layout reflects a precise tactical intent. The two lower side zip pockets and the chest pocket with cable management port let you keep tools, documents or comms devices within reach without opening the jacket. The bicep pockets with velcro panels are the characteristic trade-off of this approach: they allow you to mount ID patches or carry small items on the sleeve, but add a slight amount of lateral bulk compared to a plain sleeve. Elastic cuffs and a hem with quick-adjust toggles let you tune the fit to reduce air infiltration without relying on drawcords or extra velcro.
Key features
- Weight 630 g with compression capability: easy to carry in a pack and ready to put on whenever needed without wasting time.
- Designed for Urban Tactical layering: pairs with softshell or hard-shell outer layers without creating excessive bulk underneath.
- Velcro panels on bicep pockets: allow ID patches or lightweight gear to be attached directly to the sleeve.
- Chest pocket with cable port: routes earpiece or radio device cables without having to open the jacket.
- YKK zips with chin guard: prevent cold contact from the slider against the face when the high collar is in use.
- Elastic hem with quick-adjust toggles and elastic cuffs: seal the perimeter of the jacket to reduce air infiltration without slowing down donning.
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.






