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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.

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    Tommy Bahama Rash Guard (view 2)Tommy Bahama Rash Guard (view 1)
    View Product: Tommy Bahama Rash Guard

    Tommy Bahama

    Rash Guard
    Size 3T
    $11.99
    64% off estimated retail
    Tommy Bahama Board Shorts (view 2)Tommy Bahama Board Shorts (view 1)
    View Product: Tommy Bahama Board Shorts

    Tommy Bahama

    Board Shorts
    Size 3T
    $10.99
    67% off estimated retail
    Smockingbird Board Shorts (view 2)Smockingbird Board Shorts (view 1)
    View Product: Smockingbird Board Shorts

    Smockingbird

    Board Shorts
    Size 5
    $17.99
    33% off estimated retail
    Carter's Board Shorts (view 2)Carter's Board Shorts (view 1)
    View Product: Carter's Board Shorts

    Carter's

    Board Shorts
    Size 18 mo
    $17.99
    40% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Polo by Ralph Lauren Board Shorts (view 2)Polo by Ralph Lauren Board Shorts (view 1)
    View Product: Polo by Ralph Lauren Board Shorts

    Polo by Ralph Lauren

    Board Shorts
    Size 3
    $12.99
    43% off estimated retail
    Cat & Jack Board Shorts (view 2)Cat & Jack Board Shorts (view 1)
    View Product: Cat & Jack Board Shorts

    Cat & Jack

    Board Shorts
    Size 3T
    $16.99 $15
    Marvel Board Shorts (view 2)Marvel Board Shorts (view 1)
    View Product: Marvel Board Shorts

    Marvel

    Board Shorts
    Size 3T
    $20.99
    37% off estimated retail
    Hanna Andersson Board Shorts (view 2)Hanna Andersson Board Shorts (view 1)
    View Product: Hanna Andersson Board Shorts

    Hanna Andersson

    Board Shorts
    Size 150 cm
    $30.99
    39% off estimated retail
    OshKosh B'gosh Rash Guard (view 2)OshKosh B'gosh Rash Guard (view 1)
    View Product: OshKosh B'gosh Rash Guard

    OshKosh B'gosh

    Rash Guard
    Size 2T
    $11.99
    45% off estimated retail
    Polo by Ralph Lauren Board Shorts (view 2)Polo by Ralph Lauren Board Shorts (view 1)
    View Product: Polo by Ralph Lauren Board Shorts

    Polo by Ralph Lauren

    Board Shorts
    Size 3
    $9.99
    56% off estimated retail
    Crewcuts Rash Guard (view 2)Crewcuts Rash Guard (view 1)Flawed Gem
    View Product: Crewcuts Rash Guard

    Crewcuts

    Rash Guard
    Size 12
    $16.99
    65% off estimated retail
    Old Navy Board Shorts (view 2)Old Navy Board Shorts (view 1)
    View Product: Old Navy Board Shorts

    Old Navy

    Board Shorts
    Size 2T
    $8.99
    43% off estimated retail
    Orlebar Brown Board Shorts (view 2)Orlebar Brown Board Shorts (view 1)Flawed Gem
    View Product: Orlebar Brown Board Shorts

    Orlebar Brown

    Board Shorts
    Size 8
    $29.99 $20.99 30% off with code HOTDEAL
    91% off estimated retail
    Gymboree Board Shorts (view 2)Gymboree Board Shorts (view 1)
    View Product: Gymboree Board Shorts

    Gymboree

    Board Shorts
    Size 6-12 mo
    $15.99 $12.79 20% off with code HOTDEAL
    51% off estimated retail
    Gymboree Board Shorts (view 2)Gymboree Board Shorts (view 1)
    View Product: Gymboree Board Shorts

    Gymboree

    Board Shorts
    Size 12-18 mo
    $10.99 $8.79 20% off with code HOTDEAL
    66% off estimated retail
    Assorted Brands Wetsuit (view 2)Assorted Brands Wetsuit (view 1)
    View Product: Assorted Brands Wetsuit

    Assorted Brands

    Wetsuit
    Size X-Large youth
    $35.99 $26.99 25% off with code HOTDEAL
    55% off estimated retail
    Columbia Board Shorts (view 2)Columbia Board Shorts (view 1)
    View Product: Columbia Board Shorts

    Columbia

    Board Shorts
    Size Large tots
    $13.99 $9.79 30% off with code HOTDEAL
    33% off estimated retail
    Dakine Rash Guard (view 2)Dakine Rash Guard (view 1)
    View Product: Dakine Rash Guard

    Dakine

    Rash Guard
    Size 4T
    $32.99 $21.44 35% off with code HOTDEAL
    60% off estimated retail
    Carter's Rash Guard (view 2)Carter's Rash Guard (view 1)
    View Product: Carter's Rash Guard

    Carter's

    Rash Guard
    Size 18 mo
    $21.99 $16.49 25% off with code HOTDEAL
    40% off estimated retail
    Assorted Brands Wetsuit (view 2)Assorted Brands Wetsuit (view 1)
    View Product: Assorted Brands Wetsuit

    Assorted Brands

    Wetsuit
    Size X-Large youth
    $35.99 $26.99 25% off with code HOTDEAL
    55% off estimated retail
    Cat & Jack Board Shorts (view 2)Cat & Jack Board Shorts (view 1)
    View Product: Cat & Jack Board Shorts

    Cat & Jack

    Board Shorts
    Size 3-6 mo
    $8.99 $7.19 20% off with code HOTDEAL
    38% off estimated retail
    Carter's Board Shorts (view 2)Carter's Board Shorts (view 1)
    View Product: Carter's Board Shorts

    Carter's

    Board Shorts
    Size 12-18 mo
    $15.99 $12.79 20% off with code HOTDEAL
    56% off estimated retail
    Old Navy Board Shorts (view 2)Old Navy Board Shorts (view 1)
    View Product: Old Navy Board Shorts

    Old Navy

    Board Shorts
    Size 3-6 mo
    $7.99 $6.39 20% off with code HOTDEAL
    50% off estimated retail
    Gymboree Rash Guard (view 2)Gymboree Rash Guard (view 1)
    View Product: Gymboree Rash Guard

    Gymboree

    Rash Guard
    Size 3-6 mo
    $13.99 $11.19 20% off with code HOTDEAL
    47% off estimated retail
    Cat & Jack Rash Guard (view 2)Cat & Jack Rash Guard (view 1)
    View Product: Cat & Jack Rash Guard

    Cat & Jack

    Rash Guard
    Size 3-6 mo
    $13.99 $11.19 20% off with code HOTDEAL
    20% off estimated retail
    Carter's Rash Guard (view 2)Carter's Rash Guard (view 1)
    View Product: Carter's Rash Guard

    Carter's

    Rash Guard
    Size 12 mo
    $16.99 $9.34 45% off with code HOTDEAL
    53% off estimated retail
    Gymboree Rash Guard (view 2)Gymboree Rash Guard (view 1)Price Drop
    View Product: Gymboree Rash Guard

    Gymboree

    Rash Guard
    Size 12-18 mo
    $11.99 $7.79 35% off with code HOTDEAL
    56% off estimated retail
    Cat & Jack Board Shorts (view 2)Cat & Jack Board Shorts (view 1)
    View Product: Cat & Jack Board Shorts

    Cat & Jack

    Board Shorts
    Size 3-6 mo
    $10.99 $7.14 35% off with code HOTDEAL
    30% off estimated retail
    Florence Eiseman Board Shorts (view 2)Florence Eiseman Board Shorts (view 1)Price Drop
    View Product: Florence Eiseman Board Shorts

    Florence Eiseman

    Board Shorts
    Size 18 mo
    $20.99 $6.30 70% off with code HOTDEAL
    66% off estimated retail
    Carter's Rash Guard (view 2)Carter's Rash Guard (view 1)
    View Product: Carter's Rash Guard

    Carter's

    Rash Guard
    Size 6 mo
    $9.99 $5.99 40% off with code HOTDEAL
    66% off estimated retail
    Carter's Rash Guard (view 2)Carter's Rash Guard (view 1)Price Drop
    View Product: Carter's Rash Guard

    Carter's

    Rash Guard
    Size 9 mo
    $12.99 $7.14 45% off with code HOTDEAL
    57% off estimated retail
    Carter's Rash Guard (view 2)Carter's Rash Guard (view 1)Price Drop
    View Product: Carter's Rash Guard

    Carter's

    Rash Guard
    Size 3-6 mo
    $10.99 $6.59 40% off with code HOTDEAL
    65% off estimated retail
    Angry Birds Board Shorts (view 2)Angry Birds Board Shorts (view 1)
    View Product: Angry Birds Board Shorts

    Angry Birds

    Board Shorts
    Size Large kids
    $9.99 $5.99 40% off with code HOTDEAL
    18% off estimated retail
    Old Navy Rash Guard (view 2)Old Navy Rash Guard (view 1)Price Drop
    View Product: Old Navy Rash Guard

    Old Navy

    Rash Guard
    Size 3-6 mo
    $8.99 $5.39 40% off with code HOTDEAL
    42% off estimated retail
    Old Navy Board Shorts (view 2)Old Navy Board Shorts (view 1)Price Drop
    View Product: Old Navy Board Shorts

    Old Navy

    Board Shorts
    Size 3 mo
    $11.99 $7.19 40% off with code HOTDEAL
    28% off estimated retail
    Carter's Board Shorts (view 2)Carter's Board Shorts (view 1)Price Drop
    View Product: Carter's Board Shorts

    Carter's

    Board Shorts
    Size 18 mo
    $12.24 $7.34 40% off with code HOTDEAL
    61% off estimated retail
    Old Navy Board Shorts (view 2)Old Navy Board Shorts (view 1)Price Drop
    View Product: Old Navy Board Shorts

    Old Navy

    Board Shorts
    Size 12-18 mo
    $12.99 $7.79 40% off with code HOTDEAL
    43% off estimated retail
    Gymboree Board Shorts (view 2)Gymboree Board Shorts (view 1)Price Drop
    View Product: Gymboree Board Shorts

    Gymboree

    Board Shorts
    Size 12-18 mo
    $10.99 $6.59 40% off with code HOTDEAL
    66% off estimated retail
    Carter's Rash Guard (view 2)Carter's Rash Guard (view 1)Price Drop
    View Product: Carter's Rash Guard

    Carter's

    Rash Guard
    Size 6 mo
    $11.99 $7.19 40% off with code HOTDEAL
    61% off estimated retail
    Crazy 8 Rash Guard (view 2)Crazy 8 Rash Guard (view 1)Price Drop
    View Product: Crazy 8 Rash Guard

    Crazy 8

    Rash Guard
    Size 6-12 mo
    $11.99 $7.19 40% off with code HOTDEAL
    44% off estimated retail
    Baby Gap Board Shorts (view 2)Baby Gap Board Shorts (view 1)Price Drop
    View Product: Baby Gap Board Shorts

    Baby Gap

    Board Shorts
    Size 3-6 mo
    $10.99 $6.59 40% off with code HOTDEAL
    57% off estimated retail
    Carter's Rash Guard (view 2)Carter's Rash Guard (view 1)Price Drop
    View Product: Carter's Rash Guard

    Carter's

    Rash Guard
    Size 9 mo
    $12.24 $6.73 45% off with code HOTDEAL
    61% off estimated retail
    Gymboree Rash Guard (view 2)Gymboree Rash Guard (view 1)Price Drop
    View Product: Gymboree Rash Guard

    Gymboree

    Rash Guard
    Size 3-6 mo
    $11.99 $7.19 40% off with code HOTDEAL
    56% off estimated retail
    OshKosh B'gosh Rash Guard (view 2)OshKosh B'gosh Rash Guard (view 1)Price Drop
    View Product: OshKosh B'gosh Rash Guard

    OshKosh B'gosh

    Rash Guard
    Size 9 mo
    $11.99 $7.19 40% off with code HOTDEAL
    54% off estimated retail
    OshKosh B'gosh Board Shorts (view 2)OshKosh B'gosh Board Shorts (view 1)Price Drop
    View Product: OshKosh B'gosh Board Shorts

    OshKosh B'gosh

    Board Shorts
    Size 9 mo
    $10.99 $6.59 40% off with code HOTDEAL
    52% off estimated retail
    Freestyle Rash Guard (view 2)Freestyle Rash Guard (view 1)Price Drop
    View Product: Freestyle Rash Guard

    Freestyle

    Rash Guard
    Size 12 mo
    $11.99 $7.19 40% off with code HOTDEAL
    $11
    Old Navy Board Shorts (view 2)Old Navy Board Shorts (view 1)Price Drop
    View Product: Old Navy Board Shorts

    Old Navy

    Board Shorts
    Size 12-18 mo
    $10.99 $6.59 40% off with code HOTDEAL
    43% off estimated retail
    Carter's Rash Guard (view 2)Carter's Rash Guard (view 1)Price Drop
    View Product: Carter's Rash Guard

    Carter's

    Rash Guard
    Size 12 mo
    $14.24 $7.83 45% off with code HOTDEAL
    66% off estimated retail
    Carter's Rash Guard (view 2)Carter's Rash Guard (view 1)Price Drop
    View Product: Carter's Rash Guard

    Carter's

    Rash Guard
    Size 6-9 mo
    $11.24 $6.74 40% off with code HOTDEAL
    65% off estimated retail
    Carter's Rash Guard (view 2)Carter's Rash Guard (view 1)Price Drop
    View Product: Carter's Rash Guard

    Carter's

    Rash Guard
    Size 3 mo
    $10.99 $6.59 40% off with code HOTDEAL
    65% off estimated retail
    Gymboree Board Shorts (view 2)Gymboree Board Shorts (view 1)Price Drop
    View Product: Gymboree Board Shorts

    Gymboree

    Board Shorts
    Size 12-18 mo
    $13.24 $7.94 40% off with code HOTDEAL
    63% off estimated retail
    Cat & Jack Rash Guard (view 2)Cat & Jack Rash Guard (view 1)Price Drop
    View Product: Cat & Jack Rash Guard

    Cat & Jack

    Rash Guard
    Size 18 mo
    $10.99 $6.59 40% off with code HOTDEAL
    40% off estimated retail
    Floatimini Rash Guard (view 2)Floatimini Rash Guard (view 1)Price Drop
    View Product: Floatimini Rash Guard

    Floatimini

    Rash Guard
    Size 3 mo
    $14.24 $8.54 40% off with code HOTDEAL
    83% off estimated retail
    Carter's Rash Guard (view 2)Carter's Rash Guard (view 1)Price Drop
    View Product: Carter's Rash Guard

    Carter's

    Rash Guard
    Size 6-9 mo
    $11.24 $6.74 40% off with code HOTDEAL
    65% off estimated retail
    Baby Gap Board Shorts (view 2)Baby Gap Board Shorts (view 1)Price Drop
    View Product: Baby Gap Board Shorts

    Baby Gap

    Board Shorts
    Size 12-18 mo
    $13.24 $7.94 40% off with code HOTDEAL
    57% off estimated retail
    Baby Gap Rash Guard (view 2)Baby Gap Rash Guard (view 1)Price Drop
    View Product: Baby Gap Rash Guard

    Baby Gap

    Rash Guard
    Size 3 mo
    $12.24 $7.34 40% off with code HOTDEAL
    57% off estimated retail
    Old Navy Board Shorts (view 2)Old Navy Board Shorts (view 1)Price Drop
    View Product: Old Navy Board Shorts

    Old Navy

    Board Shorts
    Size 12-18 mo
    $11.24 $6.74 40% off with code HOTDEAL
    43% off estimated retail
    Old Navy Board Shorts (view 2)Old Navy Board Shorts (view 1)Price Drop
    View Product: Old Navy Board Shorts

    Old Navy

    Board Shorts
    Size 12-18 mo
    $11.24 $6.74 40% off with code HOTDEAL
    40% off estimated retail
    Carter's Rash Guard (view 2)Carter's Rash Guard (view 1)Price Drop
    View Product: Carter's Rash Guard

    Carter's

    Rash Guard
    Size 6 mo
    $11.24 $6.74 40% off with code HOTDEAL
    62% off estimated retail
    Old Navy Board Shorts (view 2)Old Navy Board Shorts (view 1)
    View Product: Old Navy Board Shorts

    Old Navy

    Board Shorts
    Size 12-18 mo
    $11.24 $6.74 40% off with code HOTDEAL
    40% off estimated retail
    Old Navy Board Shorts (view 2)Old Navy Board Shorts (view 1)
    View Product: Old Navy Board Shorts

    Old Navy

    Board Shorts
    Size 18-24 mo
    $9.99 $5.99 40% off with code HOTDEAL
    40% off estimated retail
    Old Navy Board Shorts (view 2)Old Navy Board Shorts (view 1)Price Drop
    View Product: Old Navy Board Shorts

    Old Navy

    Board Shorts
    Size 12-18 mo
    $8.99 $5.39 40% off with code HOTDEAL
    46% off estimated retail
    Disney Rash Guard (view 2)Disney Rash Guard (view 1)Price Drop
    View Product: Disney Rash Guard

    Disney

    Rash Guard
    Size Newborn
    $8.99 $5.39 40% off with code HOTDEAL
    20% off estimated retail
    Unbranded Board Shorts (view 2)Unbranded Board Shorts (view 1)Price Drop
    View Product: Unbranded Board Shorts

    Unbranded

    Board Shorts
    Size Small infants
    $8.99 $5.39 40% off with code HOTDEAL
    42% off estimated retail
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