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Sio9 | Stay Warm Tech Pant
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Rated 4.8 out of 5
11 Ratings

$40.50 $54.00

    Size :
  • S
  • M
  • L
  • XL
  • XXL
    Color :
  • Black/Black
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The Men's Stay Warm Coffee Charcoal Tech Pants (SIO9) was engineered to provide warmth, comfort, and durability for the performance athlete while performing in cool, cold, and wet weather conditions. The SIO9 fabric has been enhanced with Coffee Charcoal fabric which has been tested to provide natural heating elements and to wick away unwanted moisture. The Coffee Charcoal infused fabric can regulate the body's temperature (raising the temperature in cold, harsh conditions) up to 10 F. The SIO9 can be worn alone or as a base layer to outerwear.


  • Quick Dry wicks away moisture and sweat
  • Coffee Charcoal Fabrics
  • 1" waistband 
  • Internal drawstring

Featured on Gizmodo and YAHOO! News 

Fits true to size

Sizing Guide


S 32-36" 18-21" 28-32"
M 36-40" 20-25" 32-36"
L 40-43" 24-28" 36-40"
XL 43-46" 27-31" 40-44"
2XL 46-49" 30-34" 44-48"

Product Care

  • Liquid soap only
  • Machine wash cold with like colors
  • Hang dry only

Fit Model Info

Model shown is wearing size M Compression Tech Pants

  • Height: 6'0
  • Waist: 32
  • Weight: 185

average rating 4.8 out of 5
Based on 11 ratings
  • 5 Stars
    9 Reviews
  • 4 Stars
    2 Reviews
  • 3 Stars
    0 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
100% of reviewers would recommend this product to a friend
6 Reviews
Rated 5 out of 5
Review posted

Great training pants

These pants have just the right amount of compression and stay in place through the whole training session.

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Rated 5 out of 5
Review posted

I love all virus compression

I love these pants, they're warm fit and comfortable to put through intense workouts.

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Rated 4 out of 5
Review posted

Drawstring Flaw

These are great thermal material. Stretches very well. The rise is a little too long for me but it works. Major flaw is internal drawstring. Left side is waaaaaay longer than the right side. Thankfully my wifey saved the day and fixed it for me!!

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Rated 5 out of 5
Review posted

New thermals

Ran a 5K this weekend with my partner wearing the stay warm spats and and "looe" top. Amazing so grateful to have good gear to participate in the events i love!!!

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Rated 5 out of 5
Review posted

Prompt service

Quality is great.

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