Boys' Sportswear & Gym Clothing

141 Items

UA Rival Fleece

UA Rival Fleece
Boys' Hoodie

Price: £27.97 - £40
UA Lockdown 7

UA Lockdown 7
Grade School Basketball Shoes

Price: £31.97 - £40
UA Matchplay

UA Matchplay
Boys' Joggers

Price: £50
UA Unstoppable

UA Unstoppable
Boys' Shorts

Original price: £50, Sale price: £39.97 - £44.97
UA Drive Hybrid Storm SweaterFleece

UA Drive Hybrid Storm SweaterFleece
Boys' ½ Zip

Price: £45
UA Pursuit 4

UA Pursuit 4
Boys' Running Shoes

Price: £35.97 - £45
UA Rival Fleece

UA Rival Fleece
Boys' Shorts

Price: £28
Curry 12 'What The Bay'
Only At UA

Curry 12 'What The Bay'
Grade School Basketball Shoes

Price: £75
UA Matchplay

UA Matchplay
Boys' Pants

Price: £50
UA Lockdown 7

UA Lockdown 7
Pre-School Basketball Shoes

Price: £37
Curry Trend

Curry Trend
Boys' T-Shirt

Price: £26
Curry Splash

Curry Splash
Boys' Shorts

Price: £35
ColdGear®
Keeps You Warm

ColdGear®
Boys' Long Sleeve

Original price: £35, Sale price: £24.97
Curry Splash Wordmark

Curry Splash Wordmark
Boys' T-Shirt

Price: £26
Curry Logo
Only At UA

Curry Logo
Boys' T-Shirt

Price: £26
UA Rogue 5

UA Rogue 5
Boys' Running Shoes

Price: £35.97 - £45
UA Rogue 5 AL

UA Rogue 5 AL
Boys' Pre-School Running Shoes

Price: £29.97 - £43
UA Pursuit 4 AC

UA Pursuit 4 AC
Boys' Pre-School Running Shoes

Price: £29.97 - £38
UA Unstoppable

UA Unstoppable
Boys' Tapered Pants

Original price: £55, Sale price: £38.97
UA Unstoppable

UA Unstoppable
Boys' Full-Zip

Price: £32.97 - £55
UA Tech™ Big Logo

UA Tech™ Big Logo
Boys' Short Sleeve

Price: £14.97 - £19
Boys' Grade School UA Assert 10 Running Shoes

Boys' Grade School UA Assert 10 Running Shoes
Boys' Grade School Running Shoes

Price: £31.97 - £45
UA Performance Tech
3-pack

UA Performance Tech
Kids' 3-Pack Crew Socks

Price: £12
UA Drive

UA Drive
Boys' Midlayer

Original price: £39, Sale price: £30.97

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.