#9 on this list
Proton Hoody
Arc’teryx
The Arc’teryx Proton Hoody is designed for alpine climbers, ice climbers, and ski mountaineers who need sustained static warmth combined with active permeability during strenuous climbs in cold alpine environments. While similar in purpose to the Atom, the Proton is specifically engineered to handle higher abrasion and provide greater continuous airflow during movement. Built around an air-permeable Fortius Air 20 nylon face fabric and a 20D Toray liner, the Proton allows excess vapor to escape freely while maintaining a tough exterior that resists tearing against sharp granite and ice screws. Between the fabrics sits Coreloft Compact synthetic insulation, which maintains loft even when damp with sweat or spindrift. Unlike garments with fleece side panels, the Proton provides continuous insulation throughout the torso and arms, offering better static warmth during frigid belays while still venting vapor through the permeable outer shell. That continuous air permeability means the Proton does not block wind completely; strong gusts on exposed belay ledges will cut into the insulation unless shielded by a hardshell. Furthermore, the specialized materials and alpine-specific construction place the Proton in the upper echelon of technical midlayer pricing. **Highlights** - Fortius Air 20 nylon face fabric provides class-leading abrasion resistance - Fully air-permeable design allows continuous vapor transfer during exertion - Coreloft Compact synthetic insulation maintains dependable warmth when damp - Helmet-compatible, insulated hood with single-pull drawcord adjustment - Chest pocket and high hand pockets remain accessible while wearing a harness **Watch-outs** - Air-permeable construction allows high winds to penetrate without a shell - Premium alpine price point represents a significant gear investment - Slightly heavier and less compressible than minimalist packable puffies
- Price
- $190 MSRP
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#10 on this list
Highlands Shirt Jacket
Strafe
The Strafe Highlands Shirt Jacket is designed for freeride skiers, mountain-town locals, and outdoor adventurers seeking a versatile crossover piece that blends technical midlayer warmth with casual, everyday workshirt aesthetics. It is ideal for cool days at the resort, chilly campfire evenings, and shoulder-season trail walks where technical alpine appearance feels out of place. Weighing approximately 10.4 ounces, the Highlands Shirt Jacket combines a lightweight synthetic fill with a smooth, wind-resistant outer shell. The insulation provides dependable warmth for brisk days, while the snap-front placket and fold-down collar deliver a clean, timeless silhouette. Its smooth interior lining slides effortlessly over base layers or t-shirts, making it exceptionally easy to throw on when temperatures drop around the trailhead. The compromises relate directly to its lifestyle-oriented construction. The snap-front closure is noticeably slower to operate and far more prone to letting cold drafts enter between snaps than a continuous, draft-flapped zipper. Additionally, the lack of an alpine hood leaves your head and neck exposed to elements, and the premium $319 price tag makes it a luxury purchase compared to purely technical performance midlayers. **Highlights** - Lightweight 10.4-ounce design delivers versatile warmth for town and trail - Synthetic insulation provides reliable thermal performance in damp conditions - Casual snap-front shirt design bridges outdoor function with everyday wear - Smooth inner lining glides effortlessly over base layers and flannels - Dual chest flap pockets provide accessible storage for everyday essentials **Watch-outs** - Front snap closure allows cold drafts to penetrate in windy mountain weather - Lacks a protective hood for technical alpine weather and storm protection - High retail price around $319 reflects lifestyle crossover styling over pure utility
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Specs side by side
| Spec | Proton Hoody | Highlands Shirt Jacket |
|---|---|---|
| Insulation Type | Coreloft Compact synthetic fill | — |
| Face Fabric | Fortius Air 20 nylon plain weave | — |
| Lining Fabric | 20D Toray air-permeable textile | — |
| Hood Design | Adjustable, helmet-compatible insulated hood | — |
| Pocket Layout | Dual zippered hand pockets, zippered chest pocket | — |
| Fit Profile | Trim fit for low-bulk layering | — |
| Weight | — | 10.4 oz |
| Insulation | — | Synthetic fill |
| Closure | — | Full snap-button front |
| Pockets | — | Dual snap chest pockets |
| MSRP | — | Approximately $319 |
| Primary Style | — | Insulated shirt jacket |
What our reviewers liked and didn't
Proton Hoody
- High abrasion resistance relative to other breathable active midlayers
- Full-body continuous synthetic insulation avoids cold spots from fleece panels
- Retains warmth effectively even when damp from exertion or spindrift
- Clean alpine patterning accommodates climbing harnesses and helmets easily
- Air-permeable shell offers minimal defense against strong alpine winds
- Heavier and less compressible than dedicated down-filled alternatives
- Premium pricing represents a significant investment for a midlayer
Highlands Shirt Jacket
- Clean, classic shirt styling transitions seamlessly from town to trail
- Lightweight at 10.4 ounces while providing reliable synthetic warmth
- Slick interior lining glides over textured underlayers without binding
- Dual snap chest pockets offer secure storage for smaller items
- Snap-front placket allows cold wind to penetrate between closures
- High retail price around $319 limits its value compared to dedicated midlayers
- Lacks an insulated hood and zippered hand pockets for cold weather
Prices change constantly — the figure shown is the last verified catalog price, and the buy buttons always go to the current listing.