Dive into a huge selection of Under Armour at thredUP, where you can find durable, high-quality boys' clothing for play and school that stand up to the hard knocks of childhood. Think secondhand first and shop like-new hoodies and athletics at 90% off estimated retail prices.
31 items
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Under Armour
Long Sleeve T-Shirt
Size Small youth
$15.99 $12.79 20% off with code HOTDEAL
44% off estimated retail
Under Armour
Active T-Shirt
Size X-Large youth
$17.99 $13.49 25% off with code HOTDEAL
58% off estimated retail
Under Armour
Active T-Shirt
Size X-Large youth
$17.99 $13.49 25% off with code HOTDEAL
58% off estimated retail
Under Armour
Active Tank
Size X-Small youth
$12.99 $9.74 25% off with code HOTDEAL
55% off estimated retail
Under Armour
Sleeveless T-Shirt
Size Large youth
$12.99 $9.74 25% off with code HOTDEAL
59% off estimated retail
Under Armour
Short Sleeve T-Shirt
Size Medium youth
$16.99 $12.74 25% off with code HOTDEAL
48% off estimated retail
Under Armour
Active T-Shirt
Size X-Large youth
$21.99 $16.49 25% off with code HOTDEAL
56% off estimated retail
Under Armour
Short Sleeve Polo
Size Small youth
$21.99 $15.39 30% off with code HOTDEAL
56% off estimated retail
Under Armour
Active T-Shirt
Size Large youth
$18.99 $13.29 30% off with code HOTDEAL
61% off estimated retail
Under Armour
Pullover Hoodie
Size X-Large youth
$26.99 $17.54 35% off with code HOTDEAL
60% off estimated retail
Under Armour
Active T-Shirt
Size X-Large youth
$20.99 $15.74 25% off with code HOTDEAL
58% off estimated retail
Under Armour
Active T-Shirt
Size Large kids
$21.99 $16.49 25% off with code HOTDEAL
56% off estimated retail
Under Armour
Active T-Shirt
Size X-Large youth
$11.99 $9.59 20% off with code HOTDEAL
75% off estimated retail
Under Armour
Active T-Shirt
Size X-Small youth
$20.99 $15.74 25% off with code HOTDEAL
58% off estimated retail
Under Armour
Tank Top
Size Medium youth
$15.99 $11.19 30% off with code HOTDEAL
51% off estimated retail
Under Armour
Short Sleeve T-Shirt
Size X-Large kids
$13.99 $10.49 25% off with code HOTDEAL
55% off estimated retail
Under Armour
Short Sleeve Onesie
Size 18 mo
$12.99 $8.44 35% off with code HOTDEAL
44% off estimated retail
Under Armour
Short Sleeve Polo
Size X-Small youth
$22.99 $10.35 55% off with code HOTDEAL
53% off estimated retail
Under Armour
Short Sleeve Onesie
Size 3-6 mo
$12.99 $7.14 45% off with code HOTDEAL
38% off estimated retail
Under Armour
Short Sleeve T-Shirt
Size X-Large youth
$13.99 $7.69 45% off with code HOTDEAL
55% off estimated retail
Under Armour
Short Sleeve Onesie
Size 3-6 mo
$12.99 $7.14 45% off with code HOTDEAL
38% off estimated retail
Under Armour
Active T-Shirt
Size Small youth
$17.99 $9.00 50% off with code HOTDEAL
65% off estimated retail
Under Armour
Active T-Shirt
Size Medium youth
$19.24 $10.58 45% off with code HOTDEAL
75% off estimated retail
Under Armour
Active T-Shirt
Size Small youth
$18.24 $10.03 45% off with code HOTDEAL
75% off estimated retail
