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.

4,483 items·
Filtering byBoys: swimwear
    Lands' End Size 4

    View Product: Lands' End Size 4

    Lands' End

    Size 4
    $10.99 $25

    $7.69 30% off with

    Carter's Size 3T

    View Product: Carter's Size 3T

    Carter's

    Size 3T
    $10.99 $28

    $7.69 30% off with

    Carter's Size 9 mo

    View Product: Carter's Size 9 mo

    Carter's

    Size 9 mo
    $10.99 $24

    $7.69 30% off with

    Carter's Size 5T

    View Product: Carter's Size 5T

    Carter's

    Size 5T
    $10.99 $24

    $7.69 30% off with

    Mudpie Baby Size 12-18 mo
    Price Drop BadgePrice Drop

    View Product: Mudpie Baby Size 12-18 mo

    Mudpie Baby

    Size 12-18 mo
    $13.99 $61

    $6.99 50% off with

    Lands' End Size Small kids

    View Product: Lands' End Size Small kids

    Lands' End

    Size Small kids
    $6.99 $17

    $4.89 30% off with

    Carter's Size 3T

    View Product: Carter's Size 3T

    Carter's

    Size 3T
    $6.99 $24

    $4.89 30% off with

    Baby Gap Size 12-18 mo

    View Product: Baby Gap Size 12-18 mo

    Baby Gap

    Size 12-18 mo
    $6.99 $20

    $4.89 30% off with

    Old Navy Size 6

    View Product: Old Navy Size 6

    Old Navy

    Size 6
    $9.99 $25

    $6.99 30% off with

    Marvel Size 4T

    View Product: Marvel Size 4T

    Marvel

    Size 4T
    $12.99 $17

    $9.09 30% off with

    Gap Kids Size 4

    View Product: Gap Kids Size 4

    Gap Kids

    Size 4
    $11.99 $30

    $8.39 30% off with

    Baby Gap Size 5T

    View Product: Baby Gap Size 5T

    Baby Gap

    Size 5T
    $9.99 $20

    $6.99 30% off with

    Hanna Andersson Size 2

    View Product: Hanna Andersson Size 2

    Hanna Andersson

    Size 2
    $23.99 $38

    $16.79 30% off with

    Sunuva Size 9

    View Product: Sunuva Size 9

    Sunuva

    Size 9
    $27.99 $61

    $19.59 30% off with

    Assorted Brands Size X-Large kids
    Price Drop BadgePrice Drop

    View Product: Assorted Brands Size X-Large kids

    Assorted Brands

    Size X-Large kids
    $35.99 $61

    $21.59 40% off with

    City Threads Size 5

    View Product: City Threads Size 5

    City Threads

    Size 5
    $6.99 $13
    Quiksilver Size X-Large youth

    View Product: Quiksilver Size X-Large youth

    Quiksilver

    Size X-Large youth
    $13.99 $31

    $9.79 30% off with

    iExtreme Size 3T

    View Product: iExtreme Size 3T

    iExtreme

    Size 3T
    $7.99 $17

    $6.39 20% off with

    Old Navy Size 6

    View Product: Old Navy Size 6

    Old Navy

    Size 6
    $10.99 $25

    $8.79 20% off with

    Pipeline Size 14

    View Product: Pipeline Size 14

    Pipeline

    Size 14
    $12.99 $38

    $9.09 30% off with

    Gap Kids Size Large youth

    View Product: Gap Kids Size Large youth

    Gap Kids

    Size Large youth
    $14.99 $30

    $10.49 30% off with

    Crewcuts Size 8

    View Product: Crewcuts Size 8

    Crewcuts

    Size 8
    $14.99 $46

    $10.49 30% off with

    J.Crew Size 14

    View Product: J.Crew Size 14

    J.Crew

    Size 14
    $18.99 $31

    $13.29 30% off with

    Gymboree Size 0-3 mo

    View Product: Gymboree Size 0-3 mo

    Gymboree

    Size 0-3 mo
    $6.99 $25
    O'Neill Size 4

    View Product: O'Neill Size 4

    O'Neill

    Size 4
    $9.99 $17

    $6.99 30% off with

    Rip Curl Size 3

    View Product: Rip Curl Size 3

    Rip Curl

    Size 3
    $8.99 $26

    $7.19 20% off with

    Gap Kids Size 10

    View Product: Gap Kids Size 10

    Gap Kids

    Size 10
    $8.99 $30

    $7.19 20% off with

    Carter's Size 9 mo
    Price Drop BadgePrice Drop

    View Product: Carter's Size 9 mo

    Carter's

    Size 9 mo
    $5.99 $24
    Lands' End Size 14

    View Product: Lands' End Size 14

    Lands' End

    Size 14
    $13.99 $25

    $11.19 20% off with

    Hanna Andersson Size 80 cm

    View Product: Hanna Andersson Size 80 cm

    Hanna Andersson

    Size 80 cm
    $14.99 $38

    $11.99 20% off with

    Gap Kids Outlet Size X-Small youth

    View Product: Gap Kids Outlet Size X-Small youth

    Gap Kids Outlet

    Size X-Small youth
    $10.99 $19

    $8.79 20% off with

    Janie and Jack Size 4

    View Product: Janie and Jack Size 4

    Janie and Jack

    Size 4
    $14.99 $29

    $11.99 20% off with

    Assorted Brands Size Medium youth
    Rare Find BadgeRare Find

    View Product: Assorted Brands Size Medium youth

    Assorted Brands

    Size Medium youth
    $11.99 $31

    $9.59 20% off with

    Gap Kids Size 4

    View Product: Gap Kids Size 4

    Gap Kids

    Size 4
    $14.99 $30

    $11.99 20% off with

    Hurley Size 6

    View Product: Hurley Size 6

    Hurley

    Size 6
    $10.99 $31

    $8.79 20% off with

    Active by Old Navy Size X-Large youth

    View Product: Active by Old Navy Size X-Large youth

    Active by Old Navy

    Size X-Large youth
    $8.99 $13
    Mini Boden Size 5

    View Product: Mini Boden Size 5

    Mini Boden

    Size 5
    $13.99 $32

    $11.19 20% off with

    Abercrombie Size 13

    View Product: Abercrombie Size 13

    Abercrombie

    Size 13
    $9.99 $30

    $7.99 20% off with

    Hanna Andersson Size 18-24 mo

    View Product: Hanna Andersson Size 18-24 mo

    Hanna Andersson

    Size 18-24 mo
    $17.99 $38

    $10.79 40% off with

    Hanna Andersson Size 110 cm

    View Product: Hanna Andersson Size 110 cm

    Hanna Andersson

    Size 110 cm
    $21.99 $28

    $15.39 30% off with

    Gymboree Size 6

    View Product: Gymboree Size 6

    Gymboree

    Size 6
    $7.99 $22

    $6.39 20% off with

    Op Size 8

    View Product: Op Size 8

    Op

    Size 8
    $7.99 $15

    $6.39 20% off with

    Mack Size 12 mo

    View Product: Mack Size 12 mo

    Mack

    Size 12 mo
    $7.99 $26

    $6.39 20% off with

    Old Navy Size Small youth

    View Product: Old Navy Size Small youth

    Old Navy

    Size Small youth
    $7.99 $25

    $6.39 20% off with

    Gap Kids Size Medium kids

    View Product: Gap Kids Size Medium kids

    Gap Kids

    Size Medium kids
    $14.99 $30

    $10.49 30% off with

    Gymboree Size 6

    View Product: Gymboree Size 6

    Gymboree

    Size 6
    $6.99 $25
    Gymboree Size 4T

    View Product: Gymboree Size 4T

    Gymboree

    Size 4T
    $6.99 $25
    Gymboree Size 6-12 mo

    View Product: Gymboree Size 6-12 mo

    Gymboree

    Size 6-12 mo
    $6.99 $25
    Carter's Size 18 mo

    View Product: Carter's Size 18 mo

    Carter's

    Size 18 mo
    $6.99 $24
    Carter's Size 3T

    View Product: Carter's Size 3T

    Carter's

    Size 3T
    $9.99 $24