Boys' Sportswear & Gym Clothing

141 Items

UA Rival Knit

UA Rival Knit
Boys' Tracksuit

Price: £39.97 - £50
UA Tech™ Utility Woven

UA Tech™ Utility Woven
Boys' Pants

Price: £44
UA Icon Woven

UA Icon Woven
Boys' Pants

Price: £27.97 - £40
UA Tech™ Utility

UA Tech™ Utility
Boys' Short Sleeve

Price: £26
UA Tech™ Utility Woven

UA Tech™ Utility Woven
Boys' Shorts

Price: £26
UA Brawler 3.0 Tapered

UA Brawler 3.0 Tapered
Boys' Pants

Price: £26
UA Sportstyle Taped

UA Sportstyle Taped
Boys' Short Sleeve

Price: £14.97 - £22
UA Rival Woven
Water-Repellent

UA Rival Woven
Boys' Jacket

Price: £30.97 - £44
UA Overlay Wordmark

UA Overlay Wordmark
Boys' Short Sleeve

Price: £18
UA Challenger

UA Challenger
Boys' Training Short Sleeve

Original price: £18 - £21, Sale price: £18 - £18.97
UA Essential

UA Essential
Kids' 6-Pack Quarter Socks

Price: £18
UA Sportstyle

UA Sportstyle
Boys' Short Sleeve

Price: £10.97 - £19
UA Icon Knit

UA Icon Knit
Boys' Tracksuit

Price: £32.97 - £55
UA Boxed Sports

UA Boxed Sports
Boys' Short Sleeve

Price: £10.97 - £18
UA Tech™ Utility

UA Tech™ Utility
Boys' ¼ Zip

Price: £35
UA Challenger Training

UA Challenger Training
Boys' ¼ Zip

Price: £44
UA Challenger Training

UA Challenger Training
Boys' Pants

Price: £37
UA Tech™ 2.0

UA Tech™ 2.0
Boys' Short Sleeve

Price: £9.97 - £19
UA Hustle Lite
Water-Repellent

UA Hustle Lite
Backpack

Original price: £32, Sale price: £21.97 - £25.97
UA Unstoppable Fleece

UA Unstoppable Fleece
Boys' Full-Zip

Price: £48.97 - £70
UA Unstoppable Fleece

UA Unstoppable Fleece
Boys' Joggers

Price: £41.97 - £60
UA Phantom 4

UA Phantom 4
Grade School Running Shoes

Price: £75
UA Tech™ Woven Wordmark

UA Tech™ Woven Wordmark
Boys' Shorts

Price: £17.97 - £22
UA SlipSpeed™

UA SlipSpeed™
Grade School Training Shoes

Original price: £80, Sale price: £47.97

Boys' Sportswear & Gym Clothing

You’ve set your targets. Now it’s all about the grit, the grind, the hard work. Under Armour boys’ sportswear gives you pro-grade gear that helps you train better. Our boys' sports gear and shoes are built with advanced technologies and tough materials that boost your performance and help you train harder, longer and faster. 

We’ve built boys’ gym wear and performancewear for all popular sports, including running, athletics, gym training, football, basketball, and golf. Our range includes all sports wear for boys that you need for every season - including base layers, shorts, t-shirts, tracksuits, jackets, hoodies, shoes, socks, bags and hats. 

Under Armour boys’ sportswear helps you train better because we use professional grade fabrics that let you push your limits. You’ll find tech like HeatGear®, a performance baselayer built for warm weather training, that keeps you cool while letting sweat wick extra fast. For winter sessions, ColdGear® keeps you warm, while remaining highly breathable and without adding bulk. We use UA Storm on many of our boys’ sports clothing - it’s a treatment that keeps you dry, but means our trousers and jackets are still breathable so you can keep training in comfort. 

Our boys' sports shoes boost your performance by using advanced technologies and designs that help you play better. UA Magnetico football boots require zero break-in, so you can get back to training without blisters. We built our boys running shoes using UA HOVR™ cushioning, which is incredibly springy and durable. And our boys’ basketball shoes include tech like UA Flow - a rubberless grip and cushioning system, for fast, lightweight flowing movement across court. 

Browse our performancewear for boys, and find the gear you need to smash your targets.