Our next to skin fit that contours the body for no distractions

Body fit

Our close to body fit with a low profile silhouette for ease of movement

Slim fit

Our standard, slightly off body fit for unrestricted comfort

Regular fit

Our roomy, off body fit for maximum comfort and easy layering

Relaxed fit

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Black

Amaranthus

Arc'teryx

<p>Designed for protection and performance in the harshest mountain environments, this is the flagship shell from the alpine obsessives at Arc'teryx. Built to exacting standards using extraordinarily durable N100p-X 3L GORE-TEX® Pro fabric, the Alpha SV is cut to fit over thermal layers while allowing dynamic climbing movements. A stiff-brimmed adjustable storm hood, urethane-coated external zippers and burly die-cut cuff adjusters make this thing an absolute fortress when conditions deteriorate, keeping you safe and comfortable while you work out your next move. Climbing-friendly features like underarm gussets and harness-friendly pockets make this the natural choice for alpinists, ice climbers, ski mountaineers and anyone looking for a totally reliable waterproof breathable shell.</p><ul><li>Completely waterproof, breathable and durable GORE-TEX Pro construction</li><li>Face fabric is extraordinarily hard-wearing for maximum abrasion resistance</li><li>Micro seam allowance of 1.6mm reduces bulk and weight, as does extra narrow 8mm seam tape</li><li>Articulated construction facilitates dynamic moves in mountain environments</li><li>Underarm gussets keep jacket from lifting when you're swinging ice tools or reaching overhead</li><li>Adjustable StormHood™ is helmet-compatible, with a laminated brim to deflect rain and snow</li><li>Tall collar with laminated chin guard</li><li>Highly water-resistant WaterTight™ zippers used throughout</li><li>Pit zips for easy venting</li><li>Pleated chest crossover pockets offer extra volume when needed, and sit well above a climbing harness for easy access</li><li>Left bicep pocket safely stores a ski pass or ID</li><li>Internal zip pocket</li><li>Internal dump pocket</li><li>Laminated, die-cut Velcro® cuff adjusters reduce bulk, and won't catch or tear off</li><li>Drop hem provides extensive coverage, with Cohaesive™ hem adjusters that prevent hem from slipping up above climbing harness</li><li>Built-in Recco® Rescue System reflector allows ski patrol and mountain rescue teams to detect and locate it under snow</li><li>Regular fit is designed to accommodate multiple thermal layers</li></ul>

Arc'teryx Alpha SV Jacket - Women's

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The standard test for waterproof fabrics uses a standing column filled with water.  The figures given are the water column height.  A rating of 3,500mm or higher can be considered waterproof.  The higher the rating, the more durable the waterproof fabric will be over time.

Waterproof garments use waterproof-breathable technologies and are fully seam-taped. Water-resistant garments use waterproof-breathable technologies but their seams are not taped. Water-resistant garments repel water and protect against wind but are not made of waterproof fabric.

A windproof garment does not allow any air to permeate the fabric.  A garment with windproof panels has panels of fabric that are totally windproof, but the rest of the garment may not be windproof.  A wind-resistant garment resists some wind, but not as much as a garment that is windproof.

The rate at which a waterproof breathable fabric expels moisture when the inner surface is moist from perspiration.  Values under 8,000g/m2/24h provide low performance, 20,000g/m2/24h provide moderate performance and values over 30,000g/m2/24h provide high performance.

Usually referred to as DWR. A treatment made to fabrics that causes water to bead and run off instead of soaking through. 

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Arc'teryx Alpha SV Jacket - Women's

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