Base 4.0 1/2-Zip Top - Women's
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Under Armour Base 4.0 1/2-Zip Top
UA Base 4.0 is built for extreme cold weather and lower activity. It uses a unique pattern that's designed to trap heat without adding bulk. Think long underwear, revamped for today's top competitors.
- Material
- ColdGear (100% polyester)
- Fit
- slim
- Center Back Length
- 25in
- Style
- baselayer, 1/2-zip
- Pockets
- none
- Hood
- none
- Thumbholes
- yes
- Activity
- running, training
Reviews
Q&A
Overall Rating
5 based on 7 ratings
Review Summary
What do you think about this product?
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Selecting an option will reload the available reviews on the pageJanuary 4, 2023
Glad I bought this!
I originally bought this as a base layer to use for running during the winter but with the winter weather we are having this year I find myself using everytime I need to do something outside. It's warm and lightweight. Even though I usually wear a layer of cold gear underneath, I like that it provides warm without bulk. Even in -45 windchill I was warm with this as a baselayer under coveralls. I also love the thumb hole sleeves that keep my wrists warm. As far a running, I usually wear this when running in temps under 30 degrees. With the running jacket that I wear, I get too warm if I wear this in temps above 30 degrees.
Originally reviewed on Under Armour
November 17, 2022
Fits great
Fits great. Nice and thin. Love the fact that it is a bit longer and covers bum area.
Originally reviewed on Under Armour
January 26, 2022
Love It.
Great Fit. Does not lint up, wash it and dry bye next morning. Keeps me warm.
Originally reviewed on Under Armour
June 16, 2021
Great base layer
This has been great for snowboarding! Perfect for layering and washes well. The seams at the bottom of the zipper can be itchy against the skin at times.
Originally reviewed on Under Armour
January 4, 2021
ColdGear Base 1/2 Zip
These are great whether you're skiing and us as a base layer in VERY cold weather, or as something under a light weight T-shirt on a chilly morning. Keeps body heat IN and wicks perspiration away. Have owned these for multiple years and seasons.
Originally reviewed on Under Armour
November 30, 2020
Super warm
Great for very cold weather running. Fits very nice and is very comfortable
Originally reviewed on Under Armour
March 17, 2020
Warmth and function for motorcycle
My husband and I ride long distances on a Harley trike and this base 4.0 is fantastic. The material doesn’t stick to my dry skin like other nylon ones do. The thumb holes are great for keeping sleeve down when wearing gloves and keeps most of hands warm when not wearing gloves. Love the longer tail in back and the zip up neck is comfortable.
Originally reviewed on Under Armour
Need Expert Advice?
Our Gearheads Can Help
November 6, 2022
Is this a full zip or pullover?
November 3, 2022
I am 5’7” and 160 lbs. Would I be medium or large?
January 2, 2022
What would you wear over this base layer if running in very cold temps?
November 9, 2021
Is this wind resistant?
October 17, 2021