FM-115 Alpha Technical Shell — 3L Pro Waterproof Gore-Style
$172.00 USD
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FM-115 Alpha Technical Shell — 3L Pro Waterproof Gore-Style
$172.00 USD
The FM-115 Alpha is a 3-layer waterproof/windproof hardshell built for sustained exposure in alpine and wet mountain conditions. A durable nylon face fabric, fully taped seams, and a helmet-compatible storm hood keep weather out while the membrane manages moisture vapor during high-output climbs. It packs down for fast-and-light objectives where conditions can turn without warning.
Specifications
| Category | Waterproof hardshell jacket |
| Fabric | 3-layer waterproof/breathable laminate with nylon face |
| Weight class | Lightweight technical shell |
| Waterproofing & DWR | Fully taped seams, DWR-treated face fabric |
| Breathability | Membrane-based moisture vapor transmission |
| Hood | Adjustable, helmet-compatible storm hood |
| Fit | Regular, articulated for movement |
| Recommended temp range | Cool, wet, windy conditions (approx. 25–55°F / -4–13°C) |
| Intended use | Mountaineering, alpine hiking, wet-weather travel |
| Care | Machine wash cold, tumble dry low to reactivate DWR, no fabric softener |
Construction & Features
- 3-layer laminate construction with a durable nylon face for abrasion resistance
- Fully taped seams and weather-sealed zippers to keep water out
- Adjustable, helmet-compatible storm hood for full-coverage protection
- Articulated patterning through the shoulders and elbows for unrestricted reach
- Adjustable hem and cuffs to seal out wind-driven rain
Intended Activities
Alpine mountaineering — Weatherproof outer layer for high-altitude objectives.
Mountain hiking — Reliable protection when ridgeline weather shifts fast.
Wet-weather travel — Packable shell for unpredictable forecasts.
Layering system — Outer shell over insulation in cold, stormy conditions.
Fit & Sizing
Cut to a regular fit with articulated patterning, leaving room to layer insulation underneath. If you plan to wear a thick mid-layer or fleece beneath the shell, consider sizing up. Refer to the product image gallery for the size guide.
Frequently Asked Questions
How waterproof is this shell?
A: It uses a 3-layer waterproof/breathable laminate with fully taped seams, designed to keep you dry in sustained rain and snow rather than just a passing shower.
Is the hood compatible with a climbing helmet?
A: Yes. The storm hood is sized and adjustable to fit over a climbing or ski helmet, and cinches down for bare-head use.
Can it pack down for travel?
A: It is a lightweight shell that folds flat into a pack. It is built for performance protection rather than minimum weight, so it is heavier than an ultralight wind shell.
Is it breathable enough for uphill effort?
A: The membrane transmits moisture vapor to reduce internal condensation during high-output climbs. Open the front zipper to dump heat on steep ascents.
How do I maintain the waterproofing?
A: Wash cold with a technical wash, avoid fabric softener, and tumble dry low to reactivate the DWR. Re-apply a spray-on DWR once water stops beading.