




Fostex Combat Fleece Jacket — Olive Green
FOSTEX
Couldn't load pickup availability
The Fostex Combat Fleece Jacket is a technical fleece designed for outdoor and professional use in moderately cold conditions. Built from 100% polyester fleece with ripstop reinforcements in 65% polyester and 35% cotton on the arms, shoulders and back, it combines thermal insulation and low weight in a garment suited to those who spend long hours stationary in a hide or moving across demanding terrain.
The fleece offers good passive breathability and retains warmth even when damp, but it is neither waterproof nor windproof: it works best as a mid-layer under a softshell, or worn alone in dry conditions with limited wind. The mesh lining on the upper back helps wick moisture away from the body, reducing sweat build-up during periods of movement. The fit is generous: the manufacturer recommends sizing up from your usual size, which is worth bearing in mind when wearing base layers or a tactical vest underneath.
The side sleeve pockets remain accessible even when wearing a vest or chest rig that would normally cover the front pockets. The Velcro-adjustable cuffs and the main YKK zip, covered internally by a ripstop storm flap, help minimise heat loss. The sleeve pockets also feature Velcro panels for patches or identification markers. The underarm zip with mesh venting is the primary active airflow system: useful during high-output phases, but best understood as active ventilation rather than a structural substitute for the fabric's limited breathability.
Key features
- Ripstop reinforcements on the arms, shoulders and back protect the most abrasion-prone areas without adding weight.
- Side sleeve pockets stay accessible even with a vest or plate carrier on.
- Underarm zip and mesh venting allow temperature regulation during periods of intense activity.
- All sliders are YKK; the main zip is covered by an internal ripstop storm flap to reduce heat loss.
- Velcro panels on the sleeves allow patches or identification markers to be attached.
- The generous fit allows use as a mid-layer over a base layer or under a windproof outer.
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 |





