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

key.measurement

key.waist

key.hips

key.inseam

key.inseam_short

key.inseam_long

Black

Exosphere

Arc'teryx

<p>Warm, breathable and ultralight, the Proton is not your typical "puffy pant". Designed to work as an insulating mid-layer on super-cold climbs and hikes, it also works on its own in cool, dry conditions. The combination of durable nylon shell fabric and low profile, air-permeable insulation result in an insulating layer that weighs about the same as a pair of thermal long johns.</p><ul><li>Face fabric is breathable, water-resistant 40-denier nylon</li><li>Breathable synthetic insulation keeps you warm and comfortable while on the move</li><li>Comfortable elasticized waistband</li><li>Zippered, laminated thigh pocket</li></ul>

Arc'teryx Proton Pants - Men's

X-Small Short

Small Short

Medium Short

Large Short

X-Small

Small

Medium

Large

X-Large

XX-Large

Medium Tall

Large Tall

Extra Large Tall

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.

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

Save an extra 20% off clearance footwear, discount applied automatically in cart. Hurry while supplies last.

Extra 20% off clearance footwear

Online only: Get an extra 20% off clearance footwear. 

Camp weeks: 25% off all MEC Label camp gear, only until August 6.

August long savings event: Get up to 50% off gear for camping, biking, climbing and more. 

Arc'teryx Proton Pants - Men's

AI instant answers

Compare (0)