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Tenacity Coolcore Shirt

  • Sale
  • $40.00
  • Regular price $80.00

If anyone says designing great hunting apparel isn’t rocket science, they aren’t designing hunting apparel at Pnuma. Based on the same principle of a NASA spacesuit, the hollow-core, chemical-free yarn of the lightweight, ultra-comfortable Tenacity Coolcore® Performance Shirt is engineered to eliminate areas of sweat concentration and spread sweat throughout the shirt. By reducing sweat concentration and allowing moisture to spread, wetness evaporates and dries faster. Coolcore is also proven to reduce fabric cling to your skin/body so you move unrestricted in the warmest temperatures and times of highest exertion. As temperatures drop, add the IconX base layer top beneath Coolcore® to keep you warm and comfortable – and extend your use of the Coolcore® shirt throughout your season.
Product Lifetime Warranty With our Lifetime Warranty, your satisfaction - and our apparel - is guaranteed for life.

Inspired by the same cooling technology found in space suits, the lightweight, incredibly comfortable Pnuma Tenacity Shirt is powered by Coolcore® fabrics. Coolcore® moisture-activated cooling technology is proven to keep fabric cooler when you’re in the heat of the hunt by immediately moving heat and moisture away from your skin. When dry, hollow-yarn chambers inside each strand are heated by your body to keep you warm. You’ll stay concealed and comfortable no matter how hard you hunt – and no matter where. Head to any location in the Tenacity Shirt and Pant and you’ll send a message you’re coming in strong. You’re coming in tenacious.


  • Lightweight, athletic cut
  • moisture-activated cooling
  • Eliminates areas of heavy sweat concentration
  • Rapid evaporation and drying
  • Move freely with reduced cling of wet fabric to body/skin
  • Chemical-free wicking performance
  • Zippered pocket
  • Item weight: 9.6 oz (based on size Large)

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Customer Reviews

Based on 9 reviews
Thin & Breathable

Very thin & breathable shirt which will be useful during the hot time oft the year. Until now, I didn't use it for hunting but for running & it did a "cool" job there (spring is pretty cool this year 'til now with around max 13° Celsius in 400 Meters above sea level) . Kept away uncomfortable wind & kept me warm enough but not overheating me. If if works during running it will also do a great job in the hot Eastern Austrian summer (around max 30-35 ° Celsius) while stalking for roe deer early morning or late evening. Greetings from Central Europe to the US!

Pnuma Rocks

Love every product. Have it in every color.

Great Product

Sturdy! Thicker than expected. Wore it as a base layer on many occasions. Pnuma products are amazing for hunting in AZ. From Dove to Deer to Lions!

Nice baselayer

Great baselayer that can be worn solo.

Love this Shirt

Excellent at wicking and love the extended sleeves for layering. Went back and ordered 2 more.

Loved it so much, I bought more!

I have worn this shirt on over a dozen hunts since purchasing in August 20. It has been through, mild beautiful weather, cold (ok, really cool is Texas after all) and HOT. It has been through the wash dozens of times and been worn unwashed over several days of hot, humid, nasty south Texas conditions and while it may not smell like gets significantly less funky than anything I have ever worn or been around. I just witnessed this on my most recent hunt along the Mexico border and was so impressed that I immediately bought one for my son (wish I could have ordered it in Caza though) and put in an order for a Rogue Shirt. I imagine it too will be as impressive. Keep up the great work Pnuma!

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