Trinamic Long Sleeve Top

(reg )
Fit: True to Size
Runs Small
True to Size
Runs Large
100% of customers say it fits small
Men's Apparel Size & Fit Chart
Trinamic Long Sleeve Top
Runs Small
True to Size
Runs Large
100% of customers say it fits small

Men’s Apparel


Measure under the arms at the fullest point of the bust


Measure around your natural waist, narrowest point


Measure around the fullest part of your hips while standing

Chest Waist Seat
XS 33-35 27-29 32-34
S 35-38 29-31 34-37
M 38-41 31-34 37-40
L 41-44 34-37 40-43
XL 44-48 37-41 43-46
XXL 48-53 41-46 46-50
XXXL 53-57 46-50 50-54

MEN'S fit guide - TOPS

man in fitted top


Snug against body for range of motion with no extra fabric.

man in athletic top


Skims the chest, waist, hip for active movement, but not tight.

man in relaxed top


Drapes loosely from the chest, waist and hip for total comfort and ease.

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Stretch your limits and get an advantage on the competition in the men’s Trinamic Long Sleeve Top. Superior stretch, breathability and comfort are what you need to push your training further. Made with innovative NB FLEXx technology, it features a second-skin compression fit that supports without squeezing, stretches further with less resistance, and recovers effortlessly. Plus, the eye-catching two-tone design brings a bit of modern style to your look.
Product Details
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NB DRY technology wicks sweat away fast to help you stay comfortable as you workout, while laser-cut perforations provide breathability where you need it most.
  • Material: 42% Polyester, 42% Nylon and 16% Spandex
  • Dynamic stretch vs. force
  • Imported
  • Laser cut perforations
  • Shark reflective details
  • Strategic bonded seams


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Adaptive Stretch
Dynamic Motion
Enhanced Comfort

Releases moisture away from the body
Fast drying

Superior Stretch, Breathability and Comfort

See what makes this compression
apparel like no other

Customer Reviews
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customer reviews
4.0 out of 5 stars
Runs Small
True to Size
Runs Large
100% of customers say it fits small
Showing 1 - 10 of 3
Seattle, WA
April 28, 2018
Overall Fit Runs Small
Great under armour
KarstenSeattle, WA
April 28, 2018
Overall Fit Runs Small
Perfect long sleeve top for colder runs. Materials are high quality and feels great on skin.
Twin Cities, MN
January 08, 2017
Great Shirt!
MikeTwin Cities, MN
January 08, 2017
I LOVE this compression long sleeve shirt. It's light weight and not too thick (unlike 2XU compression) and thus perfect for running in cool weather or as an undershirt layer for cold weather fat biking, skiing, whatever. It wicks sweat away perfectly and is very comfortable to wear all day and beyond. I now own 4 of these (2 are short sleeve) and wish I had more. In terms of size, I am 6'6" 260 lbs athletic body guy; XXL fits perfect. Thanks NB!
Rewards members can earn points for reviews
October 13, 2016
Meant for a long torso
October 13, 2016
This is very much a nice compression Top, especially good for the colder months. Everything fits nicely but the length is just too much. Reaches below hips and some more! you can tuck it into the pants or tights as a base layer but I am not sure the odd fit is acceptable considering the high price point.
Showing 1 - 10 of 3 Reviews
Overall Fit
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