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 outdoor enthusiasts working in cold conditions. Weighing 630 g, it sits in the middle of the thermal layer range: structured enough to work on its own in mild seasons, yet light and compressible enough to pack into a rucksack when temperatures rise.
The central trade-off of this jacket is the balance between insulation and layering versatility. The Alpha fabric fleece is designed to retain heat even in moderately wet conditions, but it is neither waterproof nor windproof: optimal use is under a softshell or hardshell outer, where the fleece breathes and moves moisture toward the outer layer. Those wearing it alone should bear in mind that without external protection, wind reduces its thermal efficiency. The high collar and elastic hem drawcord with quick adjusters help contain heat loss, but do not replace an outer layer in sustained wind.
The construction is built with kit-bearing in mind. The bicep pockets with velcro panels allow identification patches or accessory panels to be attached. The chest pocket includes a cable routing port, useful for headset or earpiece cables. The front and pocket zips are YKK, a choice that reduces the risk of failure under repeated stress. Elasticated cuffs seal the wrist against cold air even when the arm is raised or a weapon is gripped.
Key points
- Compressible 630 g thermal fleece: packs into a rucksack or side pocket and is ready to use quickly when the temperature drops.
- Designed for layering: pairs with softshell or hardshell outers without creating friction or uncomfortable bulk under ballistic equipment.
- Velcro panels on the bicep pockets and chin guard on the YKK front zip: details that set the Tactical version apart from the base Alpha.
- Cable port in the chest pocket: allows the earpiece cable to be routed out without opening the pocket and losing heat.
- Elastic hem drawcord with quick adjusters: lets you tune the fit and reduce upward draughts without removing your gloves.
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.






