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Boys' activewear tops are ideal for the busy little men in your life. You'll never pay retail for these hard-wearing apparel items again when you shop at thredUP.

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59 items
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    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $18.99
    53% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $17.99
    56% off estimated retail
    Spyder Active T-Shirt (view 2)Spyder Active T-Shirt (view 1)
    View Product: Spyder Active T-Shirt

    Spyder

    Active T-Shirt
    Size 7
    $19.99
    75% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $22.99
    43% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $23.99
    41% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $21.99
    46% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $18.99
    53% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $18.99
    53% off estimated retail
    Adidas Active T-Shirt (view 2)Adidas Active T-Shirt (view 1)
    View Product: Adidas Active T-Shirt

    Adidas

    Active T-Shirt
    Size 7
    $14.99
    63% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $19.99 $13.99 30% off with code THANKU
    51% off estimated retail
    Adidas Active T-Shirt (view 2)Adidas Active T-Shirt (view 1)
    View Product: Adidas Active T-Shirt

    Adidas

    Active T-Shirt
    Size 7
    $12.99 $10.39 20% off with code THANKU
    68% off estimated retail
    Hurley Active T-Shirt (view 2)Hurley Active T-Shirt (view 1)
    View Product: Hurley Active T-Shirt

    Hurley

    Active T-Shirt
    Size 7
    $13.99 $10.49 25% off with code THANKU
    71% off estimated retail
    Old Navy Active T-Shirt (view 2)Old Navy Active T-Shirt (view 1)
    View Product: Old Navy Active T-Shirt

    Old Navy

    Active T-Shirt
    Size 7
    $8.99 $7.19 20% off with code THANKU
    25% off estimated retail
    Quiksilver Active T-Shirt (view 2)Quiksilver Active T-Shirt (view 1)
    View Product: Quiksilver Active T-Shirt

    Quiksilver

    Active T-Shirt
    Size 7
    $11.99 $9.59 20% off with code THANKU
    63% off estimated retail
    Adidas Active T-Shirt (view 2)Adidas Active T-Shirt (view 1)
    View Product: Adidas Active T-Shirt

    Adidas

    Active T-Shirt
    Size 7
    $13.99 $10.49 25% off with code THANKU
    65% off estimated retail
    Puma Active T-Shirt (view 2)Puma Active T-Shirt (view 1)
    View Product: Puma Active T-Shirt

    Puma

    Active T-Shirt
    Size 7
    $17.99 $13.49 25% off with code THANKU
    45% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $16.99 $12.74 25% off with code THANKU
    58% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $17.99 $12.59 30% off with code THANKU
    56% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $19.99 $13.99 30% off with code THANKU
    51% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $20.99 $14.69 30% off with code THANKU
    48% off estimated retail
    Adidas Active T-Shirt (view 2)Adidas Active T-Shirt (view 1)
    View Product: Adidas Active T-Shirt

    Adidas

    Active T-Shirt
    Size 7
    $12.99 $10.39 20% off with code THANKU
    68% off estimated retail
    Adidas Active T-Shirt (view 2)Adidas Active T-Shirt (view 1)
    View Product: Adidas Active T-Shirt

    Adidas

    Active T-Shirt
    Size 7
    $12.99 $10.39 20% off with code THANKU
    68% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $16.99 $11.89 30% off with code THANKU
    58% off estimated retail
    New Balance Active T-Shirt (view 2)New Balance Active T-Shirt (view 1)
    View Product: New Balance Active T-Shirt

    New Balance

    Active T-Shirt
    Size 7
    $15.99 $12.79 20% off with code THANKU
    67% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)Flawed Gem
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $18.99 $13.29 30% off with code THANKU
    53% off estimated retail
    Karrimor Active T-Shirt (view 2)Karrimor Active T-Shirt (view 1)
    View Product: Karrimor Active T-Shirt

    Karrimor

    Active T-Shirt
    Size 7
    $14.99 $10.49 30% off with code THANKU
    63% off estimated retail
    Adidas Active T-Shirt (view 2)Adidas Active T-Shirt (view 1)
    View Product: Adidas Active T-Shirt

    Adidas

    Active T-Shirt
    Size 7
    $15.99 $11.99 25% off with code THANKU
    61% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $19.99 $14.99 25% off with code THANKU
    51% off estimated retail
    IKKS Active T-Shirt (view 2)IKKS Active T-Shirt (view 1)New With Tags
    View Product: IKKS Active T-Shirt

    IKKS

    Active T-Shirt
    Size 7
    $14.99 $11.24 25% off with code THANKU
    69% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $20.99 $15.74 25% off with code THANKU
    48% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $17.99 $13.49 25% off with code THANKU
    56% off estimated retail
    Adidas Active T-Shirt (view 2)Adidas Active T-Shirt (view 1)
    View Product: Adidas Active T-Shirt

    Adidas

    Active T-Shirt
    Size 7
    $13.99 $10.49 25% off with code THANKU
    65% off estimated retail
    32 Degrees Active T-Shirt (view 2)32 Degrees Active T-Shirt (view 1)
    View Product: 32 Degrees Active T-Shirt

    32 Degrees

    Active T-Shirt
    Size 7
    $15.99 $12.79 20% off with code THANKU
    51% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)Flawed Gem
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $16.99 $12.74 25% off with code THANKU
    58% off estimated retail
    Adidas Active T-Shirt (view 2)Adidas Active T-Shirt (view 1)
    View Product: Adidas Active T-Shirt

    Adidas

    Active T-Shirt
    Size 7
    $12.99 $9.74 25% off with code THANKU
    68% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $18.99 $14.24 25% off with code THANKU
    53% off estimated retail
    Adidas Active T-Shirt (view 2)Adidas Active T-Shirt (view 1)
    View Product: Adidas Active T-Shirt

    Adidas

    Active T-Shirt
    Size 7
    $12.99 $10.39 20% off with code THANKU
    68% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $17.99 $13.49 25% off with code THANKU
    56% off estimated retail
    Nike Active T-Shirt (view 2)Nike Active T-Shirt (view 1)Flawed Gem
    View Product: Nike Active T-Shirt

    Nike

    Active T-Shirt
    Size 7
    $9.99 $7.99 20% off with code THANKU
    61% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)Flawed Gem
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $16.99 $12.74 25% off with code THANKU
    58% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $20.99 $14.69 30% off with code THANKU
    48% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $20.99 $14.69 30% off with code THANKU
    48% off estimated retail
    Nike Active T-Shirt (view 2)Nike Active T-Shirt (view 1)
    View Product: Nike Active T-Shirt

    Nike

    Active T-Shirt
    Size 7
    $14.99 $11.24 25% off with code THANKU
    63% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $16.99 $12.74 25% off with code THANKU
    58% off estimated retail
    Nike Active T-Shirt (view 2)Nike Active T-Shirt (view 1)
    View Product: Nike Active T-Shirt

    Nike

    Active T-Shirt
    Size 7
    $17.99 $13.49 25% off with code THANKU
    56% off estimated retail
    PLACE Sport Active T-Shirt (view 2)PLACE Sport Active T-Shirt (view 1)
    View Product: PLACE Sport Active T-Shirt

    PLACE Sport

    Active T-Shirt
    Size 7
    $11.99 $9.59 20% off with code THANKU
    40% off estimated retail
    Air Jordan Active T-Shirt (view 2)Air Jordan Active T-Shirt (view 1)
    View Product: Air Jordan Active T-Shirt

    Air Jordan

    Active T-Shirt
    Size 7
    $22.99 $16.09 30% off with code THANKU
    64% off estimated retail
    Tommy Bahama Active T-Shirt (view 2)Tommy Bahama Active T-Shirt (view 1)
    View Product: Tommy Bahama Active T-Shirt

    Tommy Bahama

    Active T-Shirt
    Size 7
    $16.99 $13.59 20% off with code THANKU
    58% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $20.99 $14.69 30% off with code THANKU
    48% off estimated retail
    Nike Active T-Shirt (view 2)Nike Active T-Shirt (view 1)
    View Product: Nike Active T-Shirt

    Nike

    Active T-Shirt
    Size 7
    $14.99 $11.24 25% off with code THANKU
    63% off estimated retail
    Gerry Active T-Shirt (view 2)Gerry Active T-Shirt (view 1)Price Drop
    View Product: Gerry Active T-Shirt

    Gerry

    Active T-Shirt
    Size 7
    $12.99 $10.39 20% off with code THANKU
    60% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $16.99 $11.89 30% off with code THANKU
    58% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $18.99 $13.29 30% off with code THANKU
    53% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)Price Drop
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $19.99 $13.99 30% off with code THANKU
    51% off estimated retail
    FILA Active T-Shirt (view 2)FILA Active T-Shirt (view 1)Price Drop
    View Product: FILA Active T-Shirt

    FILA

    Active T-Shirt
    Size 7
    $13.99 $10.49 25% off with code THANKU
    65% off estimated retail
    Under Armour Active T-Shirt (view 2)Under Armour Active T-Shirt (view 1)Price Drop
    View Product: Under Armour Active T-Shirt

    Under Armour

    Active T-Shirt
    Size 7
    $12.99 $9.74 25% off with code THANKU
    68% off estimated retail
    New Balance Active T-Shirt (view 2)New Balance Active T-Shirt (view 1)Price Drop
    View Product: New Balance Active T-Shirt

    New Balance

    Active T-Shirt
    Size 7
    $11.99 $9.59 20% off with code THANKU
    75% off estimated retail
    Energy Zone Active T-Shirt (view 2)Energy Zone Active T-Shirt (view 1)Price Drop
    View Product: Energy Zone Active T-Shirt

    Energy Zone

    Active T-Shirt
    Size 7
    $8.99 $7.19 20% off with code THANKU
    43% off estimated retail
    Nike Active T-Shirt (view 2)Nike Active T-Shirt (view 1)Price Drop
    View Product: Nike Active T-Shirt

    Nike

    Active T-Shirt
    Size 7
    $8.99 $7.19 20% off with code THANKU
    78% off estimated retail
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