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Boys' Swimwear

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Whether it's a day at the pool or the beach, your little man needs a comfortable and stylish look. At thredUP, you'll find boys' swimwear in a variety of styles, colors, and designs that he will love, and at up to 90% off estimated retail, the prices will make you happy as well.

2,230 items
Filtering byBoys: swimwear
Carter's Size 18 mo
Price Drop
View Product: Carter's Size 18 mo

Carter's

Size 18 mo
$11.99 $28

$7.19 40% off with

Gymboree Size 12-18 mo
Price Drop
View Product: Gymboree Size 12-18 mo

Gymboree

Size 12-18 mo
$11.99 $22

$8.39 30% off with

Assorted Brands Size Medium youth
View Product: Assorted Brands Size Medium youth

Assorted Brands

Size Medium youth
$7.99 $20

$5.59 30% off with

Assorted Brands Size 8
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In Someone's Cart

View Product: Assorted Brands Size 8

Assorted Brands

Size 8
$6.99 $31

$3.49 50% off with

OshKosh B'gosh Size Small kids
Rare Find
View Product: OshKosh B'gosh Size Small kids

OshKosh B'gosh

Size Small kids
$8.99 $20

$6.29 30% off with

Carter's Size 5
Price Drop
View Product: Carter's Size 5

Carter's

Size 5
$8.99 $28

$5.39 40% off with

Wes & Willy Size Medium kids
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In Someone's Cart

View Product: Wes & Willy Size Medium kids

Wes & Willy

Size Medium kids
$8.99 $26

$5.39 40% off with

Assorted Brands Size 7
View Product: Assorted Brands Size 7

Assorted Brands

Size 7
$11.99 $20

$8.39 30% off with

Assorted Brands Size 14
Price Drop
View Product: Assorted Brands Size 14

Assorted Brands

Size 14
$12.99 $31

$7.79 40% off with

Assorted Brands Size 11
Price Drop
View Product: Assorted Brands Size 11

Assorted Brands

Size 11
$16.99 $61

$8.49 50% off with

O'Rageous Size 10
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View Product: O'Rageous Size 10

O'Rageous

Size 10
$15.99 $46

$7.99 50% off with

ZeroXposur Size 5
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View Product: ZeroXposur Size 5

ZeroXposur

Size 5
$11.99 $32

$5.99 50% off with

Unbranded Size 8
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In Someone's Cart

View Product: Unbranded Size 8

Unbranded

Size 8
$8.99 $20

$6.29 30% off with

Tea Size 3-6 mo
View Product: Tea Size 3-6 mo

Tea

Size 3-6 mo
$14.99 $35

$10.49 30% off with

Hanna Andersson Size 3-6 mo
View Product: Hanna Andersson Size 3-6 mo

Hanna Andersson

Size 3-6 mo
$18.99 $28

$13.29 30% off with

Carter's Size 6-12 mo
Rare Find
View Product: Carter's Size 6-12 mo

Carter's

Size 6-12 mo
$10.99 $24

$7.69 30% off with

Andy & Evan Size 3T
Price Drop
View Product: Andy & Evan Size 3T

Andy & Evan

Size 3T
$12.99 $43

$7.79 40% off with

Assorted Brands Size 10
Rare Find
View Product: Assorted Brands Size 10

Assorted Brands

Size 10
$11.99 $20

$8.39 30% off with

Wonder Nation Size 3-6 mo
View Product: Wonder Nation Size 3-6 mo

Wonder Nation

Size 3-6 mo
$4.99 $10

$3.99 20% off with

Op Size X-Small youth
Price Drop
View Product: Op Size X-Small youth

Op

Size X-Small youth
$4.99 $10

$3.99 20% off with

O'Neill Size 12
Price Drop
View Product: O'Neill Size 12

O'Neill

Size 12
$4.99 $20

$3.49 30% off with

Kidgets Size 24 mo
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In Someone's Cart

View Product: Kidgets Size 24 mo

Kidgets

Size 24 mo
$5.99 $10

$2.99 50% off with

Assorted Brands Size 4
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In Someone's Cart

View Product: Assorted Brands Size 4

Assorted Brands

Size 4
$10.99 $26

$5.49 50% off with

Lands' End Size 10
Price Drop
View Product: Lands' End Size 10

Lands' End

Size 10
$11.99 $25

$7.19 40% off with

Kids Headquarters Size 18 mo
Price Drop
View Product: Kids Headquarters Size 18 mo

Kids Headquarters

Size 18 mo
$6.99 $20

$4.19 40% off with

Disney Size 3T
Price Drop
View Product: Disney Size 3T

Disney

Size 3T
$7.99 $13

$3.99 50% off with

Baby Gap Size 2T
View Product: Baby Gap Size 2T

Baby Gap

Size 2T
$12.99 $20

$9.09 30% off with

Hema Size 0-3 mo
Price Drop
View Product: Hema Size 0-3 mo

Hema

Size 0-3 mo
$9.99 $20

$5.99 40% off with

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

Carter's

Size 3T
$19.99 $51

$11.99 40% off with

Gymboree Size 5T
Rare Find
View Product: Gymboree Size 5T

Gymboree

Size 5T
$13.99 $25

$9.79 30% off with

I Play Size 12 mo
Price Drop
View Product: I Play Size 12 mo

I Play

Size 12 mo
$10.99 $20

$5.49 50% off with

E-Land Size 3T
Price Drop
View Product: E-Land Size 3T

E-Land

Size 3T
$11.99 $26

$8.39 30% off with

Gap Fit Size 4
Price Drop
View Product: Gap Fit Size 4

Gap Fit

Size 4
$4.99 $21

$3.99 20% off with

Hanna Andersson Size 90 cm
Price Drop
View Product: Hanna Andersson Size 90 cm

Hanna Andersson

Size 90 cm
$11.99 $38

$7.19 40% off with

Baby Gap Size 3-6 mo
Price Drop

In Someone's Cart

View Product: Baby Gap Size 3-6 mo

Baby Gap

Size 3-6 mo
$8.99 $25

$4.49 50% off with

NFL Size 14
Price Drop
View Product: NFL Size 14

NFL

Size 14
$15.99 $46

$9.59 40% off with

Unbranded Size 12-18 mo
View Product: Unbranded Size 12-18 mo

Unbranded

Size 12-18 mo
$18.99 $41

$13.29 30% off with

Despicable Me Size Small youth
Price Drop
View Product: Despicable Me Size Small youth

Despicable Me

Size Small youth
$11.99 $31

$7.19 40% off with

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

OshKosh B'gosh

Size 2T
$8.99 $18

$6.29 30% off with

Old Navy Size 3T
Price Drop
View Product: Old Navy Size 3T

Old Navy

Size 3T
$11.99 $20

$7.19 40% off with

Old Navy Size 4T
Price Drop
View Product: Old Navy Size 4T

Old Navy

Size 4T
$10.99 $17

$5.49 50% off with

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

Nike

Size Small youth
$9.99 $36

$4.99 50% off with

Old Navy Size 18-24 mo
Price Drop

In Someone's Cart

View Product: Old Navy Size 18-24 mo

Old Navy

Size 18-24 mo
$9.99 $15

$5.99 40% off with

Gap Kids Size 10
View Product: Gap Kids Size 10

Gap Kids

Size 10
$15.99 $30

$11.19 30% off with

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

Baby Gap

Size 18-24 mo
$8.99 $20

$6.29 30% off with

Assorted Brands Size 8
View Product: Assorted Brands Size 8

Assorted Brands

Size 8
$11.99 $20

$8.39 30% off with

Assorted Brands Size X-Large youth
Rare Find
View Product: Assorted Brands Size X-Large youth

Assorted Brands

Size X-Large youth
$8.99 $20

$6.29 30% off with

B. Split Size Small youth
Price Drop
View Product: B. Split Size Small youth

B. Split

Size Small youth
$8.99 $23

$6.29 30% off with

Gymboree Size 2T
Rare Find
View Product: Gymboree Size 2T

Gymboree

Size 2T
$13.99 $25

$9.79 30% off with

UV Skinz Size 2T
View Product: UV Skinz Size 2T

UV Skinz

Size 2T
$23.99 $51

$19.19 20% off with

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