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.

2,585 items
Jumping Beans Size 3T
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View Product: Jumping Beans Size 3T

Jumping Beans

Size 3T
$7.99 $26

$4.79 40% off with

Kiko & Max Size 12

View Product: Kiko & Max Size 12

Kiko & Max

Size 12
$13.99 $38

$11.19 20% off with

PLACE Sport Size 5

View Product: PLACE Sport Size 5

PLACE Sport

Size 5
$8.99 $16

$7.19 20% off with

Cat & Jack Size Medium youth
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View Product: Cat & Jack Size Medium youth

Cat & Jack

Size Medium youth
$12.99 $15

$10.39 20% off with

Cat & Jack Size 12

View Product: Cat & Jack Size 12

Cat & Jack

Size 12
$7.99 $15

$6.39 20% off with

Kitestrings Size 4T

View Product: Kitestrings Size 4T

Kitestrings

Size 4T
$8.99 $43

$7.19 20% off with

Dakine Size 2T

View Product: Dakine Size 2T

Dakine

Size 2T
$17.99 $51

$14.39 20% off with

Quiksilver Size 16

View Product: Quiksilver Size 16

Quiksilver

Size 16
$7.99 $20

$6.39 20% off with

Dakine Size 2T

View Product: Dakine Size 2T

Dakine

Size 2T
$14.99 $51

$11.99 20% off with

Assorted Brands Size 14

View Product: Assorted Brands Size 14

Assorted Brands

Size 14
$7.99 $20

$6.39 20% off with

Nickelodeon Size 3T

View Product: Nickelodeon Size 3T

Nickelodeon

Size 3T
$8.99 $19

$7.19 20% off with

Old Navy Size 10

View Product: Old Navy Size 10

Old Navy

Size 10
$10.99 $25

$8.79 20% off with

Tommy Hilfiger Size 6
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View Product: Tommy Hilfiger Size 6

Tommy Hilfiger

Size 6
$9.99 $26

$5.99 40% off with

Marvel Size 12
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View Product: Marvel Size 12

Marvel

Size 12
$9.99 $20

$5.99 40% off with

Jk Tech Size 4

View Product: Jk Tech Size 4

Jk Tech

Size 4
$10.99 $43

$7.69 30% off with

98 Coast Av. Size Large kids

View Product: 98 Coast Av. Size Large kids

98 Coast Av.

Size Large kids
$19.99 $61

$13.99 30% off with

Cat & Jack Size 3T
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View Product: Cat & Jack Size 3T

Cat & Jack

Size 3T
$7.99 $13

$6.39 20% off with

Billabong Size 7

View Product: Billabong Size 7

Billabong

Size 7
$19.99 $26

$13.99 30% off with

Sol Swim Size 18 mo
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View Product: Sol Swim Size 18 mo

Sol Swim

Size 18 mo
$8.99 $20
Skechers Size 2T
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View Product: Skechers Size 2T

Skechers

Size 2T
$11.99 $51

$5.99 50% off with

Disney Pixar Size 18 mo
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View Product: Disney Pixar Size 18 mo

Disney Pixar

Size 18 mo
$7.99 $10
OVS Size 140 cm

View Product: OVS Size 140 cm

OVS

Size 140 cm
$5.99 $15
Assorted Brands Size 20

View Product: Assorted Brands Size 20

Assorted Brands

Size 20
$7.99 $20

$6.39 20% off with

ZeroXposur Size 10

View Product: ZeroXposur Size 10

ZeroXposur

Size 10
$13.99 $26

$11.19 20% off with

Marvel Size 4T

View Product: Marvel Size 4T

Marvel

Size 4T
$8.99 $17

$7.19 20% off with

Hanna Andersson Size 150 cm

View Product: Hanna Andersson Size 150 cm

Hanna Andersson

Size 150 cm
$16.99 $38

$13.59 20% off with

Speedo Size Small  tots

View Product: Speedo Size Small tots

Speedo

Size Small tots
$5.99 $10
Gymboree Size 3T

View Product: Gymboree Size 3T

Gymboree

Size 3T
$8.99 $22

$7.19 20% off with

Kitestrings Size 6

View Product: Kitestrings Size 6

Kitestrings

Size 6
$12.99 $51

$10.39 20% off with

Old Navy Size 10

View Product: Old Navy Size 10

Old Navy

Size 10
$13.99 $25

$11.19 20% off with

Old Navy Size 2T

View Product: Old Navy Size 2T

Old Navy

Size 2T
$8.99 $13

$7.19 20% off with

Hanna Andersson Size 120 cm

View Product: Hanna Andersson Size 120 cm

Hanna Andersson

Size 120 cm
$16.99 $38

$13.59 20% off with

Laguna Size 5

View Product: Laguna Size 5

Laguna

Size 5
$8.99 $19

$7.19 20% off with

Greenlines Size 6
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View Product: Greenlines Size 6

Greenlines

Size 6
$9.99 $51

$5.99 40% off with

Old Navy Size 6
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View Product: Old Navy Size 6

Old Navy

Size 6
$10.99 $25

$6.59 40% off with

Gap Kids Size 14

View Product: Gap Kids Size 14

Gap Kids

Size 14
$8.99 $30

$7.19 20% off with

Nike Size 8

View Product: Nike Size 8

Nike

Size 8
$17.99 $36

$12.59 30% off with

Gap Kids Size 4
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View Product: Gap Kids Size 4

Gap Kids

Size 4
$7.99 $30

$6.39 20% off with

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

Hanna Andersson

Size 90 cm
$7.99 $28

$6.39 20% off with

Old Navy Size 7

View Product: Old Navy Size 7

Old Navy

Size 7
$10.99 $25

$8.79 20% off with

Gap Kids Size X-Large youth

View Product: Gap Kids Size X-Large youth

Gap Kids

Size X-Large youth
$8.99 $25

$7.19 20% off with

Gap Kids Size 14

View Product: Gap Kids Size 14

Gap Kids

Size 14
$18.99 $30

$15.19 20% off with

Carter's Size 5T

View Product: Carter's Size 5T

Carter's

Size 5T
$14.99 $28

$11.99 20% off with

Hanna Andersson Size 60 cm

View Product: Hanna Andersson Size 60 cm

Hanna Andersson

Size 60 cm
$15.99 $38

$12.79 20% off with

Spiderman Size 5

View Product: Spiderman Size 5

Spiderman

Size 5
$7.99 $13

$6.39 20% off with

Marvel Size Small kids

View Product: Marvel Size Small kids

Marvel

Size Small kids
$8.99 $17

$7.19 20% off with

Old Navy Size X-Small  kids
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View Product: Old Navy Size X-Small kids

Old Navy

Size X-Small kids
$8.99 $19.99

$7.19 20% off with

Assorted Brands Size 10

View Product: Assorted Brands Size 10

Assorted Brands

Size 10
$8.99 $20

$7.19 20% off with

Old Navy Size 8

View Product: Old Navy Size 8

Old Navy

Size 8
$10.99 $25

$7.69 30% off with

Cabana Life Size 18-24 mo

View Product: Cabana Life Size 18-24 mo

Cabana Life

Size 18-24 mo
$8.99 $27

$7.19 20% off with