MEC Alpine Ally Pants - Men's 5045-077

MEC Alpine Ally Pants - Men's

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Show Description

We've probably said this before, but the Alpine Ally layers really are a champagne product on a PBR budget. The 3-layer nylon offers the performance of well-known fabrics, but the raw material costs considerably less. They have a full set of backcountry-worthy features: contoured waist band and a fly, shockcord at the hems and taped seams to keep them waterproof. Cut to slide over hiking or mountaineering boots (but too slim for most ski boots) they are robust enough for all-mountain adventures from trailhead to summit.

  • 3-layer 70-denier nylon with a waterproof-breathable laminate and DWR finish
  • Seams are taped and fully waterproof.
  • Contoured waistband has belt loops and a zippered fly.
  • Zippered thigh pocket has an expandable gusset, key hook and storm flap to keep out rain.
  • 3/4 side zips with 2 top sliders for venting, 1 bottom slider to ease on over mountaineering or hiking boots.
  • Knee articulation darts increase your range of motion.
  • Reinforced polyester and Kevlar kick patches resist abrasion.
  • Snap adjustable cuffs have a boot lace hook and grommets for adding your own instep cord.
  • Recco® Rescue System reflector is detectable by ski patrol and rescue teams. Useful for resort skiing, it is not a substitute for skills training, beacons, or smart decision-making in the backcountry.


Bluesign® Approved Material

Tech specs

Show Tech specs
Weight 540g (Medium)
Ideal for
  • Alpine climbing and mountaineering
  • Camping and hiking
Technology Microporous PU laminate
Construction 3-layer
Face fabric 70-denier nylon
Fabric waterproof rating

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.

Waterproof with fully taped seams
Fabric active breathability

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.

Venting ¾-length waterproof leg zips
Pockets 1 thigh

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.

Finished inseam

The finished inseam measurement of the garment.

31.5in. (M)
Durable water repellency

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

Additional feature(s)
  • 2-way zipper
  • Kick patches
  • Recco® system
Product sustainability Bluesign® Approved Material
Made in China