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HeatGear Long Sleeve Base Layer Top

£36

Colour

Size

Product code: T128209T

About this style

This Under Armour training top is your ultimate performance base layer. The compression fit, delivered through tough, lightweight HeatGear® fabric, provides a supportive, locked-in feel. Strategically placed stretch-mesh panels provide ventilation where you need it most, while the updated ergonomic design enhances durability. A high mock neck offers additional coverage, and the material wicks moisture to keep you dry.

Details & care

Fit and style

Regular fit

Composition

84% polyester, 16% elastane

Care

Machine wash according to instructions on care label

Delivery, collection & returns

Delivery

Standard

Free over £60, or £3.99

Returns

UK returns

Free. Returns can only be arranged via postal options. Exclusions apply Full delivery and collection information Our returns policy

Exclusions apply

Full delivery and collection informationOur returns policy

About Under Armour

Train at your best, no matter the weather, with Under Armour's innovative clothing, footwear and accessory designs.

Reviews (60)

4.7

90% Recommended this product

Mentions
30 March 2025Kalameri

Great Hockey Base Layer Shirt

Originally posted on Under Armour

Yes, I recommend this

I am 6’6” with a seven-foot wingspan, and this shirt in size large-tall fits very well as a base layer under hockey pads. The torso is long enough that it stays in place through practices and games, and the sleeves are actually the proper length for my arms, leaving no exposed skin above my gloves.

Helpful?

Replied

30 March 2025

Thanks for the awesome review! 🙌 We love hearing that our shirt is a perfect fit for your game! 🙌 Sounds like it’s doing exactly what it’s supposed to—no gaps, no slip-ups. Keep dominating on the ice, and we’ve got your back for all your gear needs! 🏒💯

27 March 2025therocket018

Great Light Weight Mock

Originally posted on Under Armour

Yes, I recommend this

This mock is a great light weight shift to wear under your uniform. If you are looking for something warm, then I suggest that you go with the Cold Gear one.

Helpful?

17 March 2025Clopes22

Quality Item

Originally posted on Under Armour

Yes, I recommend this

Just what we were looking for! Perfect for my son for the early baseball season. Great price with our teacher discount too!

Helpful?

06 March 2025Phenomenal Woman

1st Time Buyer

Originally posted on Under Armour

Yes, I recommend this

Under Armour comes highly recommended by friends and co-workers.

Helpful?

24 February 2025BryanSk

Great feel! Great fit!

Originally posted on Under Armour

Yes, I recommend this

Very comfortable mock base layer for coaching.Fits great and free range of movement. Great for playing and coaching.

Helpful?

23 February 2025Styles401

Product fits very well, great to have around

Originally posted on Under Armour

Yes, I recommend this

The products I ordered fit great, great to have around them i wear them almost everyday haha. The black long-sleeved shirts keeps me so warm, almost warmer then my winter coat!

Helpful?

24 January 2025cavsking23

Length is great just a tad tight

Originally posted on Under Armour

Yes, I recommend this

The material is excellent for keeping cool and the length is decent for my tall slim build. It is a tad tight though and I wish the shirt was a bit looser. I tried the XL tall which is too loose.

Helpful?

22 January 2025Upde82

Great shirt

Originally posted on Under Armour

Yes, I recommend this

These shirts are very comfortable to wear. The only thing about them is the sleeves are a little longer than I like, but that isn’t stopping me from buying more.

Helpful?

18 January 2025Chef Ponye

Lightweight and warm

Originally posted on Under Armour

Yes, I recommend this

Not quite as warm as my cold gear but it does do a great job in the right weather situation for me. Top quality that looks like it will really last.

Helpful?

18 January 2025TRH29

This product is great!

Originally posted on Under Armour

Yes, I recommend this

This long sleeve is great. I would recommend to anyone. I bought this product to wear under my golf polo in the winter time

Helpful?

09 January 2025Chuckmonster

Perfect for my needs

Originally posted on Under Armour

Yes, I recommend this

I wear these under my work shirts and like the compression fit. Keeps me warm, is plenty flexible, and works far better than other bulky thermal gear I have used in the past. Also works great in the gym under a sweatshirt when I am working up a solid lather.

Helpful?

03 January 2025Curt In LAG

Continued great shirts!

Originally posted on Under Armour

Yes, I recommend this

I have owned and used UA Heatgear shirts for any years. This one is a replacement for one that is worn out.

Helpful?

02 January 2025MJF10

No one mocks this mock !

Originally posted on Under Armour

Yes, I recommend this

Great lightweight compression material … breathable with precise support where it’s most needed … the mock neck is comfortable and not binding … great for layering

Helpful?

30 December 2024Bill Lav

Very comfortable shirt

Originally posted on Under Armour

Yes, I recommend this

I like the way it fits, tight but not too tight.. great feel great look

Helpful?

28 December 2024MikePSU

Warm and Comfortable

Originally posted on Under Armour

Yes, I recommend this

These kept me both warm and very comfortable while being outdoors all day in sub twenty degree weather. Highly recommended!

Helpful?

23 December 2024

That product is incredible

Originally posted on Under Armour

Yes, I recommend this

I love it and I definitely will recommend it

Helpful?

21 December 2024101Sweetness

Perfect

Originally posted on Under Armour

Yes, I recommend this

My man is 6'3" & wanted more of these for under his clothes for working in a cold warehouse in the winter. Fits well & works well

Helpful?

18 December 2024Nikos T

Worked as advertised.

Originally posted on Under Armour

Yes, I recommend this

I use it at work, wearing it under my uniform when temperatures are low. It's warm, without being bulky and doesn't bulge under the uniform shirt. I'm 5,7 ft, 152 lb and medium size fits about right, for a compression shirt. It's been a couple of weeks since I bought it, and so far I don't have any issues with it.

Helpful?

15 December 2024Ekfah77

Great length

Originally posted on Under Armour

Yes, I recommend this

Sleeves always run short for me, I am 6'4" but my wingspan is longer, these fit fantastic! The only downside, and it's to be expected with a synthetic shirt especially a compression fit, is your armpits smell bad faster.

Helpful?

13 December 2024Linda24

Originally posted on Under Armour

Yes, I recommend this

These shirts keep you nice and warm and are very comfortable. Great buy for the price.

Helpful?

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