Boys' Sportswear & Gym Clothing

141 Items

UA Tech™ Utility Woven

UA Tech™ Utility Woven
Boys' Shorts

Original price: £26, Sale price: £20.97 - £22.97
UA Hoops Net

UA Hoops Net
Boys' Short Sleeve

Original price: £18, Sale price: £13.97
UA Matchplay

UA Matchplay
Boys' Joggers

Original price: £50, Sale price: £34.97
UA Tech™ Summer

UA Tech™ Summer
Boys' Shorts

Original price: £22, Sale price: £17.97 - £19.97
UA Hoops Next

UA Hoops Next
Boys' Short Sleeve

Original price: £18, Sale price: £15.97
UA Locker V

UA Locker V
Boys' Slides

Price: £12.97 - £16
UA Tech™ Utility

UA Tech™ Utility
Boys' ¼ Zip

Original price: £35, Sale price: £24.97 - £27.97
UA Surge 4

UA Surge 4
Boys' Running Shoes

Price: £32.97 - £37
UA Split Big Logo

UA Split Big Logo
Boys' Short Sleeve

Original price: £18, Sale price: £12.97 - £13.97
UA Tech™ Utility

UA Tech™ Utility
Boys' Short Sleeve

Original price: £26, Sale price: £17.97 - £22.97
UA Drive
Water-Repellent

UA Drive
Boys' Hoodie

Original price: £45, Sale price: £31.97
UA Tech™ Graphic

UA Tech™ Graphic
Boys' Short Sleeve

Original price: £22, Sale price: £14.97
UA Tech™ Woven Graphic

UA Tech™ Woven Graphic
Boys' Shorts

Original price: £22, Sale price: £17.97
UA Unstoppable

UA Unstoppable
Boys' Shorts

Original price: £50, Sale price: £39.97
UA Tech™ Textured

UA Tech™ Textured
Boys' Short Sleeve

Price: £21
UA Tech™ Game Day

UA Tech™ Game Day
Boys' Short Sleeve

Original price: £22, Sale price: £14.97
HeatGear® Armour
Keeps You Cool

HeatGear® Armour
Boys' Long Sleeve

Price: £30
UA Drive Lightweight

UA Drive Lightweight
Boys' Hoodie

Price: £39
Grade School UA Jet '23 Basketball Shoes

Grade School UA Jet '23 Basketball Shoes
Grade School Basketball Shoes

Original price: £45, Sale price: £22.97
UA Drive

UA Drive
Boys' Midlayer

Original price: £39, Sale price: £30.97
UA Playoff Printed

UA Playoff Printed
Boys' Polo

Original price: £45, Sale price: £31.97
UA Assert 10 Uniform Synthetic

UA Assert 10 Uniform Synthetic
Boys' Running Shoes

Original price: £45, Sale price: £35.97
UA Drive Hybrid Storm SweaterFleece

UA Drive Hybrid Storm SweaterFleece
Boys' ½ Zip

Original price: £45, Sale price: £35.97

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.