My Cart


Sio15X | Stay Warm Long Sleeve X-Form
Free Gift

Rated 5.0 out of 5
Based on 2 ratings

$34.80 USD $58.00 USD

    Size :
  • XS
  • S
  • M
  • L
  • XL
  • XXL
    Color :
  • Black
Notify Me When Available

The Sio15X Top provides a tailored fit that is best suited to accommodate full-range of motion activities. The Biomechanical X-Form design reinforces posterior muscles and promotes good posture while in motion. This top provides the perfect balance of performance and function.


  • Targeted Compression
  • Quick Dry
  • Increases Skin Temp up to 10°F.
  • Improves circulation

Sizing Guide


XS 35"
S 37"
M 39"
L 42"
XL 45"
2XL 48"

Product Care

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

Fit Model Info

Model shown is wearing size L Top

  • Waist: 32
  • Height: 6'2

average rating 5.0 out of 5
Based on 2 ratings
  • 5 Stars
    2 Reviews
  • 4 Stars
    0 Reviews
  • 3 Stars
    0 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
100% of reviewers would recommend this product to a friend
Customer photos and videos
2 Reviews
Reviewed by Christie C.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Rash guard

I love this shirt so much! I am doing most of my weightlifting in my home gym/garage in Minnesota. The temps outside have been below zero, and the temo in my workout space, around 50. This shirt provides me with the necessary warmth to my muscles, to get a good, safe workout in.

Was this helpful?
Reviewed by Pui Lok C.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Snug fit and warm

Keeps me warm and not too restrictive.

Was this helpful?


Enter your email address for stock alerts, discounts, promotions and more!