Kids Shop by Size Big Kids (8-20)
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UA Matchplay Printed Boys' Polo
We actually upgraded one of the best-selling polos in the world. The fabric is now lighter and more breathable to keep you even cooler and more focused.- $7.88
$26.25- $7.88
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UA Matchplay Boys' Shorts
Made to flex with your body with any movement you make. We used a high-performance, mobile fabric, a stretch waistband, and a new streamlined fit to reduce drag on every swing and unlock total mobility on the course.- from $10.12
$33.75- from $10.12
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UA Gameday Armour Pro Boys' Padded Forearm Sleeves
These forearm sleeves feature McDavid® HEX® pads for ultimate protection and HeatGear® performance fabric for comfort and breathability.- $9.00
$30.00- $9.00
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UA Armour Guard Braces Strapless Kids' Mouthguard
Built to fit any athlete in any sport. No matter what you do, stay protected.- $6.90
$23.00- $6.90
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HeatGear® Asymmetrical Right Boys' Leggings
HeatGear® is our original performance baselayer—the one you put on first and take off last. So we made these asymmetrical leggings extra comfortable by wicking sweat and stretching so you can move no matter what.- $9.00
$30.00- $9.00
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HeatGear® Asymmetrical Left Boys' Leggings
HeatGear® is our original performance baselayer—the one you put on first and take off last. So we made these asymmetrical leggings extra comfortable by wicking sweat and stretching so you can move no matter what.- $9.00
$30.00- $9.00
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UA Solid UPF Boys' Polo
The polo that keeps up with active kids. Smooth double-knit fabric stretches with every move while UPF 50+ blocks harmful rays. Sweat-wicking performance meets classic polo style for all-day comfort.- $9.00
$30.00- $9.00
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UA Printed UPF Boys' Polo
The polo that keeps up with active kids. Smooth double-knit fabric stretches with every move, wicks sweat fast, and delivers UPF 50+ sun protection. Built for comfort with a fuller cut and side slits.- $10.50
$35.00- $10.50
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UA Lure Ditsy Boys' Volley Shorts
Quick-dry swim shorts with playful UA graphics and built-in comfort. Water-resistant fabric, UPF 50+ sun protection, and mesh brief lining make these perfect for pool days and beach adventures.- $12.60
$42.00- $12.60
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UA UPF Fish Printed Boys' Long Sleeve
The long sleeve that keeps young athletes protected and comfortable all day. Built with UPF 50+ sun protection and moisture-wicking fabric that moves with them from practice to play. Durable enough for their toughest adventures.- $11.40
$38.00- $11.40
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UA Drift Tide Printed Boys' Shirt
The adventure-ready shirt that keeps up with every beach day, pool party, and summer exploration. Our printed UA Drift Tide shirt combines classic button-front style with serious performance features like UPF 50+ sun protection and sweat-wicking fabric.- $12.00
$40.00- $12.00
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UA Drift Tide Printed Boys' Shirt
The adventure-ready shirt that keeps up with his every move. Built with durable plain weave fabric that won't snag on playground equipment or beach rocks, this button-up delivers UPF 50+ sun protection for all-day outdoor exploration.- $12.00
$40.00- $12.00
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UA UPF Solid Logo Boys' Long Sleeve
The long sleeve that keeps young athletes protected and comfortable all day. Built with UPF 50+ sun protection and moisture-wicking fabric that moves with them through every adventure.- $10.20
$34.00- $10.20
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UA UPF Fish Printed Boys' Long Sleeve
The long sleeve that keeps young athletes protected and comfortable all day. Built with UPF 50+ sun protection and moisture-wicking fabric that moves with them from playground to practice.- $11.40
$38.00- $11.40
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UA Utility Pro Piped Boys' Knicker Baseball Pants
Not all baseball pants are made the same. These are light enough for hot weather, but still give you the durability, stretch, and protection for a full season.- $10.19
$33.97- $10.19
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UA Out Of Here Boys' Baseball Short Sleeve
Everyone makes graphic Ts...but Under Armour makes them better. The fabric we use is light, soft, and quick-drying.- $5.09
$16.97- $5.09
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HeatGear® Armour Boys' Leggings
HeatGear® Armour 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 matter what.- $10.50
$35.00- $10.50
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Kids' UA Converge Matte Catching Mask null
One foul tip off of this catcher's helmet will make you glad for the high-impact construction that absorbs the impact. In the late innings, you'll be glad it's still wicking your sweat to keep your head cool and dry.- $82.50
$275.00- $82.50
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UA Utility Pro Boys' Slider Shorts
Sliders built to protect your legs, accommodate a cup, and wick sweat to help keep you dry. With an extra-wide waistband to keep them in place.- $7.49
$24.97- $7.49
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UA Knee Supports Kids
Take the stress off your knees with these easy-to-attach knee supports for baseball and softball catchers.- $15.00
$50.00- $15.00
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