Boys' Sportswear & Gym Clothing

141 Items

UA Assert 10 AC Synthetic

UA Assert 10 AC Synthetic
Boys' Pre-School Running Shoes

Price: £40
UA Drive
Water-Repellent

UA Drive
Boys' Hoodie

Original price: £45, Sale price: £31.97
UA Blitzing Low

UA Blitzing Low
Boys' Adjustable Cap

Price: £14.97 - £19
UA Challenger

UA Challenger
Boys' Tracksuit

Price: £55
UA Matchplay

UA Matchplay
Boys' Polo

Price: £21.97 - £31
UA Tech™ Summer

UA Tech™ Summer
Boys' Shorts

Original price: £22, Sale price: £17.97 - £19.97
Kids' UA Magnetico Select 4 Firm Ground Jr. Football Boots

Kids' UA Magnetico Select 4 Firm Ground Jr. Football Boots
Kids' Soccer Cleats

Original price: £45, Sale price: £35.97
UA Challenger Knit

UA Challenger Knit
Boys' Shorts

Price: £12.97 - £21
UA Rival Fleece Big Logo

UA Rival Fleece Big Logo
Boys' Hoodie

Price: £27.97 - £40
UA Matchplay Printed

UA Matchplay Printed
Boys' Polo

Price: £27.97 - £35
Project Rock Printed

Project Rock Printed
Boys' Short Sleeve

Original price: £35, Sale price: £20.97
UA Challenger

UA Challenger
Boys' Tracksuit

Original price: £55, Sale price: £32.97 - £43.97
UA Tech™ Woven

UA Tech™ Woven
Boys' Cargo Shorts

Original price: £40, Sale price: £19.97
UA Tech™ Vent Jacquard

UA Tech™ Vent Jacquard
Boys' Shorts

Price: £20.97 - £26
UA Ignite Select

UA Ignite Select
Boys' Slides

Price: £14.97 - £19
UA Tech™ Utility Woven

UA Tech™ Utility Woven
Boys' Shorts

Original price: £26, Sale price: £20.97 - £22.97
UA Matchplay

UA Matchplay
Boys' Shorts

Price: £39
UA Tech™ 2.0

UA Tech™ 2.0
Boys' ½ Zip

Price: £16.97 - £31
Project Rock Rival

Project Rock Rival
Boys' Hoodie

Original price: £55, Sale price: £32.97
UA Speed Swift

UA Speed Swift
Boys' Running Shoes

Original price: £37, Sale price: £29.97
Boys' Pre-School UA Assert 10 AC Running Shoes

Boys' Pre-School UA Assert 10 AC Running Shoes
Boys' Pre-School Running Shoes

Original price: £40, Sale price: £31.97
UA Split Big Logo

UA Split Big Logo
Boys' Short Sleeve

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

UA Tech™ Woven Graphic
Boys' Shorts

Original price: £22, Sale price: £17.97 - £19.97
UA Tech™ Utility

UA Tech™ Utility
Boys' Short Sleeve

Original price: £26, Sale price: £17.97 - £22.97

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.