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Under Armour

Online only

HeatGear® Side Pocket Boxers

£32

£22.40

Sorry, this item is no longer available

Product code: T128727T

Details & care

Fit and style

Regular fit

Elasticated waist

HeatGear® is our original performance baselayer—the one you put on first and take off last. So we made it extra comfortable by wicking sweat and stretching so you can move. No athlete can go without it.

Composition

Body - 79% polyester, 21% 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 (297)

4.8

91% Recommended this product

Mentions
24 November 2025KDM 20

NICE PROTECTIVE GEAR

Originally posted on Under Armour

Yes, I recommend this

THESE ARE GREAT FOR WEARING UNDER MY SCRUBS, NICE FIT AND PROTECTIONS

Helpful?

23 November 2025Umpire34

Heat gear with pocket

Originally posted on Under Armour

Yes, I recommend this

These are great. I use them for working softball games (under my gear). Wear them to the gym. Wear them around the house when cleaning. Comfortable and wicking is effective. They run a bit small, but not much.

Helpful?

20 November 2025eod1957

Perfect Daily Wear

Originally posted on Under Armour

Yes, I recommend this

These are the most colorful and most comfortable to wear around the house or to the gym or out and about.

Helpful?

10 November 2025ColorTightConnoisseur

Love the color of these tights!

Originally posted on Under Armour

Yes, I recommend this

These Under Armour tights fit as expected, snug and true to size. But the real win comes from the color of these beauties because it truly POPS! Bright, vibrant orange color that looks great under any darker colored shorts: especially pairing it with a black, a navy, a dark grey, a darker forest green. The options are endless with these Under Armour tights.

Helpful?

09 November 2025BlindSight888

A+

Originally posted on Under Armour

Yes, I recommend this

Good winter gear, hope it last as long as my first pair.

Helpful?

09 November 2025gapbeef

Bring back the original Compression Shorts

Originally posted on Under Armour

No, I don't recommend this

I’ve been wearing Under Armour compression shorts for well over a decade, and the older models were absolutely perfect — snug, durable, and genuinely compressive. They fit like a second skin, kept their shape, and never rode up. Unfortunately, the current version feels like a completely different product. The fabric is thinner and stretchier, the waistband isn’t as firm, and they’ve lost the supportive compression that made the originals great. Instead of feeling locked in and athletic, they feel loose and cheap. It’s frustrating because UA used to set the standard for compression gear, and now the design change has taken away everything that made them worth buying. I hope Under Armour listens to longtime customers and brings back the original construction and fabric quality — there’s clearly still demand for the classic design.

Helpful?

Replied

09 November 2025

Hey, Douglas! Thank you for your feedback. We're so sorry the HeatGear Pocket Shorts didn't feel the same this time, but we appreciate you being a loyal brand fan all of these years. We'll reach out via email to help you find the type of gear you're looking for.

05 November 2025gmtcrazy

performance wear product

Originally posted on Under Armour

Yes, I recommend this

Good fit & excellent for gym work, wide waist band holds well (standard performance tech under wear waist band is too skinny & rolls when put to hard use)

Helpful?

04 November 2025Tbas

Fun color and functional

Originally posted on Under Armour

Yes, I recommend this

Love the vibrant color. It had a deep pocket great for a key or a phone.

Helpful?

31 October 2025cszkirka

This is a great product

Originally posted on Under Armour

Yes, I recommend this

These short are not to tight allowing for extra movement

Helpful?

27 October 2025JEC1977

Perfect Fit and Smart Design

Originally posted on Under Armour

Yes, I recommend this

The UA HeatGear Pocket Men’s 9” Shorts are outstanding! They fit tight—exactly how compression shorts should—offering great support without being uncomfortable. The fabric feels cool, flexible, and stays in place even during intense workouts. The side phone pocket is a game changer: it keeps my phone snug against my leg and completely out of the way, yet still easy to grab when I need it. These have quickly become my go-to training shorts. Perfect fit, great functionality, and awesome comfort all in one!

Helpful?

26 October 2025JSJ25

This Product is great

Originally posted on Under Armour

Yes, I recommend this

I buy these compression shorts for the gym. I also, Have been wearing them on a daily basis for work. they keep me from sweating

Helpful?

14 October 202597armour

Finally new colors

Originally posted on Under Armour

Yes, I recommend this

Love these shorts wear them everyday have always wanted more color options

Helpful?

09 October 2025Anonymous Otter

Colours are different from the website

Originally posted on Under Armour

No, I don't recommend this

I recently purchased one each of these shorts in rebel pink and blaze orange. Sizing and compression is just right, but the colours are quite off compared to what is shown on the website. They look a lot brighter and more vivid in the photos on the site, while in real life both colours are actually less vivid and more on the pastel-ish side. Great product, but should improve the photos for accuracy.

Helpful?

Replied

10 October 2025

Hi there! We're sorry to hear the colors didn’t appear as bright as expected. If you'd like to return or exchange them, we're happy to help! Look out for an email from us shortly.

05 October 2025oceansthirteen

Another quality product from Under Armour

Originally posted on Under Armour

Yes, I recommend this

Well made and well fitting. I always wear Under Armour compression shorts when working out and these just another quality piece of gear from Under Armour.

Helpful?

03 October 2025Topkick

Great but…

Originally posted on Under Armour

Yes, I recommend this

I routine and purchase UA Heatgear Long shorts for my athletic activities and have always been satisfied. The quality and fit our terrific and this most recent purchase is no different. However, first time I purchased shorts in this Pink color. Unfortunately, this color choice is much more transparent than I anticipated, especially when wet. Therefore if you’re concerned about modesty I recommend this Pink as a base layer only and paired with a suitable overgarment.

Helpful?

03 October 2025

Quality HeatGear product

Originally posted on Under Armour

Yes, I recommend this

Excellent product and well made quality HeatGear short, Love the quality and the hidden pocket by the side. Will buy it again!!!

Helpful?

23 September 2025DR55

Great

Originally posted on Under Armour

Yes, I recommend this

Fit well and comfortable. Cool color....Will be using them under running shorts for October Breast Cancer Awareness

Helpful?

22 September 2025SE33

Great fit and works well underneath shorts.

Originally posted on Under Armour

Yes, I recommend this

Works great for pickleball.

Helpful?

21 September 2025dakota1122

great fitting

Originally posted on Under Armour

Yes, I recommend this

perfect compression wear them every day like the new colours

Helpful?

21 September 2025Gfit26

Very comfortable

Originally posted on Under Armour

Yes, I recommend this

These compression shorts are comfortable and durable

Helpful?

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