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Style# 40126

Performance Winter Mock

Average rating of 93%

Regular Price: $49.99

Special Price $42.99

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Purpose Built

The Performance Winter Mock was designed to act as a superior bottom thermal layer in cool or cold environments. Crafted from French terry knit fabric in a nylon/polyester/spandex blend, the Performance Mock offers an ideal combination of warmth, comfort, and flexibility. Designed to trap air against your body, the Performance Mock keeps your body temperature constant without adding weight or bulk, allowing it to be worn comfortable under your TDU® or PDU® duty wear. A reinforced collar ensures a secure fit without constriction, ensuring a neat and professional appearance in any setting. Moisture wicking action pulls wetness away from your skin, an underarm gusset ensures full freedom of movement, and flat-lock seams prevent chaffing. Whatever your profession, the Performance Winter Mock offers unbeatable comfort and warmth in any climate.



  • Lightweight thermal protection
  • Reinforced collar
  • Underarm gussets for freedom of movement
  • Moisture wicking




Product Reviews

Ratings and Reviews


(based on 6 reviews)

93 %

Warm and comfortable


From Tactical PA

from Southern Maine

Warm and very comfortable. Dries quickly.

Good buy


From Mad Cat

from Alberta, CANADA

I normally wear the XL in all my 5.11 shirts, coats and jackets, however my XL mock tee is too large. The Large mock fits better (second one).



From Ragmongo

from Durango, Co

to wear as a winter smock under my uniform and vest

husband loves them money well spent !


From matt's wife

from modesto,ca

wear to work and play

Must Buy for Winter Duty


From Jersey boy

from New Jersey

Great for cold weather! Cant wait for the winter to REALLY try it out. It really does keep in the body heat. I was working the overnight shift and was wearing this, KEPT ME WARM! As for sizing, get the next size bigger from what you normally get. If your a Med get a LG.

Very nice.


From MAdler

from Chicago, IL

Helps keep me very warm. Thicker than I expected.

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