M's Alpha Insulator Short

8 reviews
Size Guide
Dune Camo
Deep Navy
  • With a full-length side-zip for easy removal or layering, the new Alpha Short is a clutch piece for frigid resort laps, long sled-skiing days, chilly alpine starts, or relaxing at a backcountry hut. Featuring the lightweight, breathable, and quick-drying Polartec Alpha, the active insulation will maintain critical warmth for your knees and legs without bunching at your boots. Wear these shorts under (or over) your shell pants for additional comfort and safety on cold days.

  • FIT: Active

    INSEAM: 13 in (size Medium)


    • Sam is 6'2"/188cm wearing size Large
  • FACE FABRIC: Recon AIR lightweight 2-way stretch mini rip-stop | 100% nylon | acyrlic coating | 53 g/m2 | 20D/20D

    INSULATION: 80g Polartec® Alpha® Insulation | 100% Recycled Polyester

    LINING: Recon AIR lightweight 2-way stretch mini rip-stop | 100% nylon | 53 g/m2 | 20D/20D

    WEIGHT: 240 g (8.5 oz)


    GUARANTEE: Strafe 2 Year Warranty

zipping off the mens alpha insulator short on a ski tour


  • Lightweight, over-knee, zip-off short with active insulation.
  • 100% recycled, quick-drying, breathable, and lightweight Polartec® Alpha® insulation.
  • Highly air-permeable stetch face fabric aids breathabiilty with an acryclic coating to repel light weather.
  • Thin, 4-way stretch waistband for layering comfort.
  • Full-length side zippers with snap button closure and waist adjustment.
  • Articulated knee for unrestricted movement.
  • Open welt hand pockets with zippered card pocket in right hand pocket.
  • Water resistant and reliable YKK® Coil zippers.

Customer Reviews
5.0 Based on 8 Reviews
5 ★
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Filter Reviews:
    Marian M.
    United States United States
    I recommend this product

    Cozy 3/4 length short

    Wow, these shorts are fantastic, and I wish I had found them sooner! I wore them under my shells and loved the feel and function. The double zippers are spot on and the snaps on the waist keep them in place. I wear a size small, and they are true to size.

    • What is your favorite mountain or place to ride? Alta
    United States United States
    I recommend this product

    What Stu said...

    "The best piece of gear I never knew I was missing." Agreed. I thought I knew what I was going to say but Stu said it best. However, if you'd like to read more... Most days I ski in a thin shell and lightweight bibs. It doesn't matter if I'm skinning or doing some resort laps. Some days though, it's real cold, or you don't want to feel like you're sitting directly on the lift's seat bear bum, or your base layers are all dirty, regardless, these shorts are the perfect missing puzzle piece. Easy to take on and off and forgot they're there. Buy one!

    • What is your favorite mountain or place to ride? Highlands
    United States United States
    I recommend this product

    Best piece of gear I never knew I was missing

    These shorts are my new favorite piece of gear that I never realized I needed. For years I had used multiple layers of long underwear while skiing. I always had to scrunch my long underwear above my ski boots which was very uncomfortable. Then if I got too hot there was no easy way to de-layer. The Alpha Shorts solved all the problems I used to have with baselayers for my legs. My only feedback is I wish they came out with them sooner.

    • What is your favorite mountain or place to ride? Bridger Bowl
    I recommend this product

    From Summit to Sofa & Back Again

    Truly my favorite piece I own. A very versatile short that has filled many blank spaces in my active and leisure life. The alpha short kept me warm as a mid-layer on colder lift access days and works wonderfully as an outer layer while on windy ridges or summits while transitioning. Getting them on or off is easy with the full length double zips, and with the two snap buttons on either hip the adjustability is great. I found myself not only wearing these while skiing but around the house, walking the dog, at apres, and hanging out at camp. I cannot recommend the Alpha Short enough!

    • What is your favorite mountain or place to ride? Telluride
    Strafe Outerwear M's Alpha Insulator Short Review
    Kelly W.

    Alpha Shorts are killer

    Perfect to wear under a shell pant or bib. Keeps your mid section warm. No need for a base layer underneath these bad boys. They also get some great looks apres!