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Corby Martin Rocking the Session Co Shirt During a Late Season Jump Session | Photo Corby Martin Mountain Weekly News
Professional Outerwear Reviews: Jackets, Bibs & Shells

Session Co. Glizzy Guru Long Sleeve Base Layer Review

Man Wearing POC MIPS Helmet
Corby Martin
May 27, 2026 3 Mins Read
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When the Session co. Glizzy Guru long sleeve base layer arrived, I have to admit my first impression of the graphic wasn’t great. But I put the shirt through it’s paces over a week of split touring, resort laps and pow surfing.

Conditions ranged from chilly chairlift rides to warm and sunny touring.

Man Splitboarding with Bright Shirt while Reviewing Sessions CO Shirt
Corby Martin Wearing the Session Co. Glizzy Guru Long Sleeve Base Layer While Touring in British Columbia | Photo Corby Martin Mountain Weekly News
Trail Map
1 Fabric Quality & Fit
2 Overall Impression

Fabric Quality & Fit

If I am being honest I’m a bit of a Merino snob, but I do have several full synthetic base layers to compare to. What stood about this Session Co base layer and a huge credit for staying stink free, I used it 4 days straight without a wash and it remained odor free. Which is rare for touring in the mountains. 

Fabric Quality: To the touch, the fabric just doesn’t have the feel of a more premium base layer and with it’s price point of only $65 it’s more reminiscent of low-cost promotional apparel vs something like Le Bent Base Layers which start around $150 . 

The material composition (92% polyester/8% spandex) lacks the premium touch found in other brands within the same price bracket. If your a natural material snob this is something you can pass on. For someone wanting fun shirts to wear around town with wild designs we dig these. 

ssion Co. Glizzy Guru Long Sleeve Base Layer
Corby Wearing the Session Co. Glizzy Base Layer | Photo Mountain Weekly News

Breathability Issues While the technical specs mention a polyester and spandex blend designed for mobility, the real-world breathability is disappointing. Instead of the airy, moisture-wicking experience you’d expect from activewear, the fabric feels clingy. During even moderate activity, heat builds up quickly, leading to a swampy sensation that makes it feel less like a performance garment and more like a standard synthetic shirt that can’t handle sweat, yet has great odor management. So you need to figure out what tradeoff is best for your needs.

T-shirt with orange hot dogs and blue backgroujnd from sessions co
The Unique Session Co Hot Dog Design | Photo Corby Martin Mountain Weekly News

Graphic Design The “Glizzy Guru” graphic is loud and unrefined, clashing with the overall intent of the garment. Rather than a clever or stylish nod to the theme, the design feels tacked on and lacks aesthetic appeal, making it difficult to style outside of very specific (and limited) settings.

But hey, I’m just more of a Taco person personally. And this is a new company so throw stuff at the wall and see what sticks. 

Overall Impression

Overall, I hope this new start up brand will mature their product line, and I wish them luck in the future.

TETON Tested Base Layers We Dig

  1. LeBent Heavyweight Base Layer
  2. Smartwool Intraknit Base Layer
  3. Airblaster Ninja Suit
  4. Best Snowboard Base Layers
Man Wearing POC MIPS Helmet
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Corby Martin

Corby Martin is an independent outdoor gear tester for Mountain Weekly News, specializing in field-testing and reviewing Professional Outerwear Reviews: Jackets, Bibs & Shells, Professional Footwear Reviews: Trail to Town, and Teton-Tested Ski & Snowboard Helmet Reviews in the backcountry.

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