Under Armour

Under Armour Womens Packaged Base 4 0 Crew

4.9(16)

121+ bought in the past month

$84.80$100.00
size5
$84.80
Was $100.00Save $15.20

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Technical specifications

item_model_number6004070
departmentwomens
date_first_availableSeptember 17, 2024
manufacturerUnder Armour
best_sellers_rank#153,132 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #389 in Women's Activewear T-Shirts

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Customer reviews

4.916 ratings
★★★★★

Very Heavy and Thick!

blaze17December 25, 2025

These Under Armour Base 4.0 are way thicker and heavier than I expected—in a good way. They feel warm and durable, not like thin leggings at all. The material has some texture and actually feels made for being outside. I’ve already worn them out in the cold and they held up great. Super comfortable and exactly what I was hoping for. I’d definitely buy them again. Read more

★★★★★

Quality

Debbie MarcumDecember 17, 2025

Great! Read more

★★★★★

Comfortable

Wendy KneupperDecember 10, 2025

Really keeps you warm. Good fabric Read more

★★★★★

High-quality and functional base layer that keeps you warm and dry

NoraOctober 14, 2025

This Under Armour base crew top is a solid purchase. I’m 5’2” and ~120 lbs, and the fit is spot-on—snug but not constricting, perfect as a base layer or even on its own in cool to moderately cold weather (depending on how much you tolerate the chill). The quality is exactly what I expect from Under Armour— high-end, with fabric that wicks sweat away quickly to keep you warm and comfortable. I also like that the thumb "hole" prevents your sleeves from riding up but there isn't much fabric between your thumb and pointer finger. It was built with functionality in mind especially if you are wearing gloves. I love that it’s black, which is so versatile and goes with everything. The material is soft, not itchy at all, and feels great against the skin. I hang-dry most of my clothes, and this top seems like it’ll last for years with proper care. I’ve been wearing it for chilly morning walks with my toddler, but it’s also perfect as a layer under a jacket on colder winter days. Honestly, you can’t go wrong with this one—it’s comfy, functional, and built to last! Read more

Review image 1Review image 2Review image 3
★★★★★

Amazing base layer!!

KAAOctober 7, 2025

Under Armour makes great products and this base-layer is no exception. Early mornings are getting very cold and I have worn this shirt several times for my running and workout. It is very comfortable throughout the workout, keeping me warm, while it is breathable and the sweat dries out very quickly. it is like a body glove, snug but not suffocating. The inside material is soft and comfortable. With this I can avoid wearing several layers with their added weight, making the workout more effective and comfortable. I have washed it several times and it still feels the same as it did on the first day. Highly recommend it for active people. Read more

★★★★☆

Warm and Cozy Women's Base Layer - Size Down for Perfect Fit

WILBERT A GUTIERREZOctober 18, 2025

This women's base layer is a fantastic addition for cold-weather outdoor activities! As soon as I put it on, I started to sweat—even in my house at 70°F—so this is definitely designed for chilly conditions outside. It’s super warm and comfortable, making it a great choice for winter sports or outdoor workouts. The only downside is that it runs a bit big, so if you’re between sizes, I recommend sizing down for a snugger fit. Overall, a solid base layer that does its job well in cold environments! Read more

★★★★★

Warn exercise shirt

KittyOctober 13, 2025

Feels warm but not bulky! Perfect for that time of year where you want a light jacket but want to be able to move better. It’s super soft and well made! It’s a little stretchy and not bulky at all. I can tell it’s a premium brand immediately! Perfect for an always cold girly like me! Read more

★★★★★

Nice quality, good fit - warm!

A. WilliamsOctober 7, 2025

It doesn't get too cold where I live so I won't get much use of this at home. But in the fall and winter, I often travel to places that are colder and I still like to get out and walk. So I ordered this for those occasions. It's a nice base layer that doesn't add much bulk. Definitely warmed me up (I had to whip it off because it's 80 degrees here now!), but was still breathable. Looking forward to wearing it more later this year. Read more

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