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Boys' Activewear

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Cater to your boys' busy lifestyles with affordable activewear from thredUP. Enjoy steep savings with prices up to 90% off estimated retail when you shop our extensive collection of hoodies, tops, shorts, and pants.

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14,601 items·
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Filtering byBoys: activewear
    Gymboree Size 6
    View Product: Gymboree Size 6

    Gymboree

    Size 6
    $8.99 $35

    $6.29 30% off with

    Reebok Size 8
    Price Drop
    View Product: Reebok Size 8

    Reebok

    Size 8
    $6.99 $38

    $4.19 40% off with

    Nike Size Small youth
    Price Drop
    View Product: Nike Size Small youth

    Nike

    Size Small youth
    $14.99 $51

    $7.49 50% off with

    Carter's Size 3 mo
    Price Drop
    View Product: Carter's Size 3 mo

    Carter's

    Size 3 mo
    $10.99 $20

    $5.49 50% off with

    Nike Size X-Large youth
    View Product: Nike Size X-Large youth

    Nike

    Size X-Large youth
    $9.99 $38

    $6.99 30% off with

    Jordan Size X-Large kids
    View Product: Jordan Size X-Large kids

    Jordan

    Size X-Large kids
    $15.99 $46

    $11.19 30% off with

    Jumping Beans Size 2T
    Price Drop
    View Product: Jumping Beans Size 2T

    Jumping Beans

    Size 2T
    $8.99 $10

    $4.49 50% off with

    ZeroXposur Size 14
    Price Drop
    View Product: ZeroXposur Size 14

    ZeroXposur

    Size 14
    $31.99 $77

    $15.99 50% off with

    Disney Store Size 7
    View Product: Disney Store Size 7

    Disney Store

    Size 7
    $8.99 $26

    $6.29 30% off with

    Jansport Size Small youth
    View Product: Jansport Size Small youth

    Jansport

    Size Small youth
    $15.99 $23

    $11.19 30% off with

    Baby Gap Size 6-12 mo
    View Product: Baby Gap Size 6-12 mo

    Baby Gap

    Size 6-12 mo
    $10.99 $18

    $7.69 30% off with

    Paul Frank Size X-Small kids
    Price Drop
    View Product: Paul Frank Size X-Small kids

    Paul Frank

    Size X-Small kids
    $21.99 $51

    $10.99 50% off with

    Baby Gap Size 0-3 mo
    Price Drop
    View Product: Baby Gap Size 0-3 mo

    Baby Gap

    Size 0-3 mo
    $28.99 $88

    $17.39 40% off with

    Puma Size Medium youth
    View Product: Puma Size Medium youth

    Puma

    Size Medium youth
    $9.99 $31

    $6.99 30% off with

    Under Armour Size Large youth
    View Product: Under Armour Size Large youth

    Under Armour

    Size Large youth
    $21.99 $38

    $17.59 20% off with

    Baby Gap Size 4T
    View Product: Baby Gap Size 4T

    Baby Gap

    Size 4T
    $11.99 $30

    $8.39 30% off with

    OshKosh B'gosh Size 18-24 mo
    View Product: OshKosh B'gosh Size 18-24 mo

    OshKosh B'gosh

    Size 18-24 mo
    $8.99 $22

    $6.29 30% off with

    Converse Size 10
    View Product: Converse Size 10

    Converse

    Size 10
    $19.99 $31

    $13.99 30% off with

    Nike Size Medium youth
    Price Drop
    View Product: Nike Size Medium youth

    Nike

    Size Medium youth
    $18.99 $38

    $13.29 30% off with

    Baby Gap Size 18-24 mo
    Price Drop
    View Product: Baby Gap Size 18-24 mo

    Baby Gap

    Size 18-24 mo
    $16.99 $40

    $10.19 40% off with

    Baby Gap Size 12-18 mo
    Price Drop
    View Product: Baby Gap Size 12-18 mo

    Baby Gap

    Size 12-18 mo
    $19.99 $40

    $11.99 40% off with

    Nike Size Medium youth
    View Product: Nike Size Medium youth

    Nike

    Size Medium youth
    $11.99 $38

    $8.39 30% off with

    Carter's Size 3T
    View Product: Carter's Size 3T

    Carter's

    Size 3T
    $14.99 $26

    $10.49 30% off with

    Gap Kids Size 4
    Rare Find
    View Product: Gap Kids Size 4

    Gap Kids

    Size 4
    $14.99 $40

    $10.49 30% off with

    Under Armour Size Small youth
    Price Drop
    View Product: Under Armour Size Small youth

    Under Armour

    Size Small youth
    $11.99 $38

    $8.39 30% off with

    Gap Kids Size 8
    View Product: Gap Kids Size 8

    Gap Kids

    Size 8
    $15.99 $40

    $11.19 30% off with

    Marvel Size 2T
    Price Drop
    View Product: Marvel Size 2T

    Marvel

    Size 2T
    $7.99 $20

    $3.99 50% off with

    Under Armour Size 18 mo
    Price Drop
    View Product: Under Armour Size 18 mo

    Under Armour

    Size 18 mo
    $25.99 $38

    $12.99 50% off with

    Carter's Size 3 mo
    Price Drop
    View Product: Carter's Size 3 mo

    Carter's

    Size 3 mo
    $7.99 $20

    $4.79 40% off with

    Carter's Size 12 mo
    Price Drop
    View Product: Carter's Size 12 mo

    Carter's

    Size 12 mo
    $6.99 $20

    $4.19 40% off with

    Carter's Size 12 mo
    Price Drop
    View Product: Carter's Size 12 mo

    Carter's

    Size 12 mo
    $9.99 $20

    $5.99 40% off with

    Carter's Size 6 mo
    Price Drop
    View Product: Carter's Size 6 mo

    Carter's

    Size 6 mo
    $6.99 $20

    $4.19 40% off with

    Carter's Size Newborn
    Price Drop
    View Product: Carter's Size Newborn

    Carter's

    Size Newborn
    $6.99 $20

    $4.19 40% off with

    Carter's Size 6 mo
    Price Drop
    View Product: Carter's Size 6 mo

    Carter's

    Size 6 mo
    $9.99 $20

    $5.99 40% off with

    Carter's Size 9 mo
    Price Drop
    View Product: Carter's Size 9 mo

    Carter's

    Size 9 mo
    $6.99 $20

    $4.19 40% off with

    Carter's Size 6 mo
    Price Drop
    View Product: Carter's Size 6 mo

    Carter's

    Size 6 mo
    $6.99 $20

    $4.19 40% off with

    Carter's Size 6 mo
    Price Drop
    View Product: Carter's Size 6 mo

    Carter's

    Size 6 mo
    $6.99 $20

    $4.19 40% off with

    Carter's Size Newborn
    Price Drop
    View Product: Carter's Size Newborn

    Carter's

    Size Newborn
    $6.99 $20

    $4.19 40% off with

    Carter's Size 18 mo
    Price Drop
    View Product: Carter's Size 18 mo

    Carter's

    Size 18 mo
    $6.99 $20

    $4.19 40% off with

    Puma Size 18 mo
    Price Drop
    View Product: Puma Size 18 mo

    Puma

    Size 18 mo
    $6.99 $27

    $4.19 40% off with

    ZeroXposur Size 10
    Price Drop
    View Product: ZeroXposur Size 10

    ZeroXposur

    Size 10
    $9.99 $38

    $4.99 50% off with

    Puma Size 6
    Price Drop
    View Product: Puma Size 6

    Puma

    Size 6
    $8.99 $31

    $5.39 40% off with

    Lands' End Size X-Large youth
    View Product: Lands' End Size X-Large youth

    Lands' End

    Size X-Large youth
    $10.99 $31

    $7.69 30% off with

    Crewcuts Outlet Size 3
    Price Drop
    View Product: Crewcuts Outlet Size 3

    Crewcuts Outlet

    Size 3
    $11.99 $26

    $7.19 40% off with

    Tommy Hilfiger Size 18 mo
    Price Drop
    View Product: Tommy Hilfiger Size 18 mo

    Tommy Hilfiger

    Size 18 mo
    $7.99 $26

    $4.79 40% off with

    Tommy Hilfiger Size 2T
    Price Drop
    View Product: Tommy Hilfiger Size 2T

    Tommy Hilfiger

    Size 2T
    $7.99 $34

    $4.79 40% off with

    Nike Size 2T
    View Product: Nike Size 2T

    Nike

    Size 2T
    $14.99 $26

    $10.49 30% off with

    Eddie Bauer Size 4T
    View Product: Eddie Bauer Size 4T

    Eddie Bauer

    Size 4T
    $10.99 $34

    $7.69 30% off with

    Joe's Jeans Size 7
    View Product: Joe's Jeans Size 7

    Joe's Jeans

    Size 7
    $15.99 $61

    $11.19 30% off with

    OshKosh B'gosh Size 2T
    Price Drop
    View Product: OshKosh B'gosh Size 2T

    OshKosh B'gosh

    Size 2T
    $15.99 $40

    $9.59 40% off with

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