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.

4,455 items·
Filtering byBoys: swimwear
    Gymboree Size 5

    View Product: Gymboree Size 5

    Gymboree

    Size 5
    $8.99 $22

    $6.29 30% off with

    Gymboree Size 3T

    View Product: Gymboree Size 3T

    Gymboree

    Size 3T
    $10.99 $25

    $7.69 30% off with

    Marvel Size 6

    View Product: Marvel Size 6

    Marvel

    Size 6
    $7.99 $20

    $5.59 30% off with

    Nike Size 10

    View Product: Nike Size 10

    Nike

    Size 10
    $15.99 $36

    $11.19 30% off with

    Hanna Andersson Size 60 cm

    View Product: Hanna Andersson Size 60 cm

    Hanna Andersson

    Size 60 cm
    $18.99 $41

    $13.29 30% off with

    Gymboree Size 6

    View Product: Gymboree Size 6

    Gymboree

    Size 6
    $6.99 $25

    $4.89 30% off with

    Gymboree Size 6

    View Product: Gymboree Size 6

    Gymboree

    Size 6
    $6.99 $25

    $4.89 30% off with

    Gap Kids Size 4

    View Product: Gap Kids Size 4

    Gap Kids

    Size 4
    $14.99 $30

    $10.49 30% off with

    Gymboree Size 2T

    View Product: Gymboree Size 2T

    Gymboree

    Size 2T
    $9.99 $25

    $6.99 30% off with

    Hanna Andersson Size 80 cm
    Price Drop BadgePrice Drop

    View Product: Hanna Andersson Size 80 cm

    Hanna Andersson

    Size 80 cm
    $9.99 $28

    $5.99 40% off with

    Gymboree Size 18-24 mo
    Price Drop BadgePrice Drop

    View Product: Gymboree Size 18-24 mo

    Gymboree

    Size 18-24 mo
    $17.99 $37

    $10.79 40% off with

    Old Navy Size X-Large youth

    View Product: Old Navy Size X-Large youth

    Old Navy

    Size X-Large youth
    $8.99 $25

    $6.29 30% off with

    UV Skinz Size 7

    View Product: UV Skinz Size 7

    UV Skinz

    Size 7
    $8.99 $26

    $6.29 30% off with

    Carter's Size 12 mo
    Price Drop BadgePrice Drop

    View Product: Carter's Size 12 mo

    Carter's

    Size 12 mo
    $7.99 $28

    $4.79 40% off with

    Columbia Size 4T

    View Product: Columbia Size 4T

    Columbia

    Size 4T
    $31.99 $51

    $22.39 30% off with

    Castaways Size 2T

    View Product: Castaways Size 2T

    Castaways

    Size 2T
    $5.99 $17
    Janie and Jack Size 5

    View Product: Janie and Jack Size 5

    Janie and Jack

    Size 5
    $10.99 $21

    $8.79 20% off with

    Old Navy Size 5T

    View Product: Old Navy Size 5T

    Old Navy

    Size 5T
    $8.99 $17

    $7.19 20% off with

    Baby Boden Size 13

    View Product: Baby Boden Size 13

    Baby Boden

    Size 13
    $9.99 $26

    $7.99 20% off with

    Carter's Size 2T
    Price Drop BadgePrice Drop

    View Product: Carter's Size 2T

    Carter's

    Size 2T
    $12.99 $41

    $7.79 40% off with

    Cotton On Size 8

    View Product: Cotton On Size 8

    Cotton On

    Size 8
    $20.99 $46

    $14.69 30% off with

    Billabong Size 10

    View Product: Billabong Size 10

    Billabong

    Size 10
    $9.99 $38

    $6.99 30% off with

    Carter's Size 5T

    View Product: Carter's Size 5T

    Carter's

    Size 5T
    $11.99 $24

    $9.59 20% off with

    Crazy 8 Size 7

    View Product: Crazy 8 Size 7

    Crazy 8

    Size 7
    $7.99 $17

    $6.39 20% off with

    Old Navy Size 8

    View Product: Old Navy Size 8

    Old Navy

    Size 8
    $10.99 $25

    $8.79 20% off with

    Sweet & Soft Size 2T

    View Product: Sweet & Soft Size 2T

    Sweet & Soft

    Size 2T
    $7.99 $20

    $6.39 20% off with

    Hanna Andersson Size 6

    View Product: Hanna Andersson Size 6

    Hanna Andersson

    Size 6
    $11.99 $28

    $8.39 30% off with

    Under Armour Size 4T

    View Product: Under Armour Size 4T

    Under Armour

    Size 4T
    $15.99 $32

    $11.19 30% off with

    REI Size 6 mo

    View Product: REI Size 6 mo

    REI

    Size 6 mo
    $21.99 $51

    $15.39 30% off with

    Cat & Jack Size 16

    View Product: Cat & Jack Size 16

    Cat & Jack

    Size 16
    $6.99 $15
    Carter's Size 3T

    View Product: Carter's Size 3T

    Carter's

    Size 3T
    $9.99 $24
    OshKosh B'gosh Size 5T

    View Product: OshKosh B'gosh Size 5T

    OshKosh B'gosh

    Size 5T
    $9.99 $20

    $6.99 30% off with

    H&M Size 6

    View Product: H&M Size 6

    H&M

    Size 6
    $12.99 $23

    $9.09 30% off with

    Sportex Size Medium youth

    View Product: Sportex Size Medium youth

    Sportex

    Size Medium youth
    $9.99 $23

    $6.99 30% off with

    Hanna Andersson Size 80 cm
    Price Drop BadgePrice Drop

    View Product: Hanna Andersson Size 80 cm

    Hanna Andersson

    Size 80 cm
    $7.99 $38

    $6.39 20% off with

    Tuga Size 11

    View Product: Tuga Size 11

    Tuga

    Size 11
    $8.99 $26

    $7.19 20% off with

    Gap Kids Size Medium youth

    View Product: Gap Kids Size Medium youth

    Gap Kids

    Size Medium youth
    $10.99 $30

    $8.79 20% off with

    H&M Size 4

    View Product: H&M Size 4

    H&M

    Size 4
    $8.99 $19

    $7.19 20% off with

    Cat & Jack Size 16

    View Product: Cat & Jack Size 16

    Cat & Jack

    Size 16
    $9.99 $15

    $7.99 20% off with

    Quiksilver Size 3T

    View Product: Quiksilver Size 3T

    Quiksilver

    Size 3T
    $9.99 $26

    $7.99 20% off with

    Old Navy Size 18-24 mo

    View Product: Old Navy Size 18-24 mo

    Old Navy

    Size 18-24 mo
    $7.99 $15

    $6.39 20% off with

    Tea Size 7

    View Product: Tea Size 7

    Tea

    Size 7
    $16.99 $35

    $13.59 20% off with

    Cherokee Size 6

    View Product: Cherokee Size 6

    Cherokee

    Size 6
    $6.99 $15
    Assorted Brands Size Medium kids

    View Product: Assorted Brands Size Medium kids

    Assorted Brands

    Size Medium kids
    $11.99 $31

    $9.59 20% off with

    Hanna Andersson Size 130 cm

    View Product: Hanna Andersson Size 130 cm

    Hanna Andersson

    Size 130 cm
    $11.99 $28

    $9.59 20% off with

    Cat & Jack Size 8

    View Product: Cat & Jack Size 8

    Cat & Jack

    Size 8
    $7.99 $15

    $6.39 20% off with

    Old Navy Size 4T

    View Product: Old Navy Size 4T

    Old Navy

    Size 4T
    $6.99 $17
    Polo by Ralph Lauren Size 8

    View Product: Polo by Ralph Lauren Size 8

    Polo by Ralph Lauren

    Size 8
    $9.99 $26

    $7.99 20% off with

    Skechers Size 3T

    View Product: Skechers Size 3T

    Skechers

    Size 3T
    $11.99 $32

    $9.59 20% off with

    Marvel Size Medium youth

    View Product: Marvel Size Medium youth

    Marvel

    Size Medium youth
    $8.99 $20

    $7.19 20% off with