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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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    Quiksilver Board Shorts (view 2)Quiksilver Board Shorts (view 1)
    View Product: Quiksilver Board Shorts

    Quiksilver

    Board Shorts
    Size X-Small kids
    $11.99
    33% off estimated retail
    Rugged Butts Board Shorts (view 2)Rugged Butts Board Shorts (view 1)
    View Product: Rugged Butts Board Shorts

    Rugged Butts

    Board Shorts
    Size 6-12 mo
    $9.99 $11
    Lands' End Board Shorts (view 2)Lands' End Board Shorts (view 1)
    View Product: Lands' End Board Shorts

    Lands' End

    Board Shorts
    Size 8
    $9.99
    54% off estimated retail
    World Wide Wear Rash Guard (view 2)World Wide Wear Rash Guard (view 1)
    View Product: World Wide Wear Rash Guard

    World Wide Wear

    Rash Guard
    Size 4
    $10.99
    21% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Quiksilver Board Shorts (view 2)Quiksilver Board Shorts (view 1)
    View Product: Quiksilver Board Shorts

    Quiksilver

    Board Shorts
    Size 5
    $8.99
    50% off estimated retail
    Gap Rash Guard (view 2)Gap Rash Guard (view 1)
    View Product: Gap Rash Guard

    Gap

    Rash Guard
    Size Small infants
    $11.99
    42% off estimated retail
    Lands' End Board Shorts (view 2)Lands' End Board Shorts (view 1)Flawed Gem
    View Product: Lands' End Board Shorts

    Lands' End

    Board Shorts
    Size 18
    $10.99
    63% off estimated retail
    St. Tropez Swimwear Board Shorts (view 2)St. Tropez Swimwear Board Shorts (view 1)
    View Product: St. Tropez Swimwear Board Shorts

    St. Tropez Swimwear

    Board Shorts
    Size 14
    $13.99
    36% off estimated retail
    St. Tropez Swimwear Board Shorts (view 2)St. Tropez Swimwear Board Shorts (view 1)
    View Product: St. Tropez Swimwear Board Shorts

    St. Tropez Swimwear

    Board Shorts
    Size 14
    $14.99
    31% off estimated retail
    Old Navy Rash Guard (view 2)Old Navy Rash Guard (view 1)
    View Product: Old Navy Rash Guard

    Old Navy

    Rash Guard
    Size 6
    $12.99
    51% off estimated retail
    Crewcuts Rash Guard (view 2)Crewcuts Rash Guard (view 1)
    View Product: Crewcuts Rash Guard

    Crewcuts

    Rash Guard
    Size 5
    $14.99
    63% off estimated retail
    Baby Wear Rash Guard (view 2)Baby Wear Rash Guard (view 1)New With Tags
    View Product: Baby Wear Rash Guard

    Baby Wear

    Rash Guard
    Size 12 mo
    $8.99
    43% off estimated retail
    Art Class Board Shorts (view 2)Art Class Board Shorts (view 1)
    View Product: Art Class Board Shorts

    Art Class

    Board Shorts
    Size 14
    $7.99
    42% off estimated retail
    Tom & Teddy Board Shorts (view 2)Tom & Teddy Board Shorts (view 1)
    View Product: Tom & Teddy Board Shorts

    Tom & Teddy

    Board Shorts
    Size 5
    $24.99
    44% off estimated retail
    Kanu Surf Board Shorts (view 2)Kanu Surf Board Shorts (view 1)
    View Product: Kanu Surf Board Shorts

    Kanu Surf

    Board Shorts
    Size X-Large kids
    $10.99
    50% off estimated retail
    Old Navy Rash Guard (view 2)Old Navy Rash Guard (view 1)
    View Product: Old Navy Rash Guard

    Old Navy

    Rash Guard
    Size 12-18 mo
    $9.99
    28% off estimated retail
    Vilebrequin Board Shorts (view 2)Vilebrequin Board Shorts (view 1)
    View Product: Vilebrequin Board Shorts

    Vilebrequin

    Board Shorts
    Size 6
    $49.99 $39.99 20% off with code THANKU
    67% off estimated retail
    Wetsuit Club by Candlesticks Board Shorts (view 2)Wetsuit Club by Candlesticks Board Shorts (view 1)
    View Product: Wetsuit Club by Candlesticks Board Shorts

    Wetsuit Club by Candlesticks

    Board Shorts
    Size 18 mo
    $8.99 $7.19 20% off with code THANKU
    18% off estimated retail
    Assorted Brands Board Shorts (view 2)Assorted Brands Board Shorts (view 1)
    View Product: Assorted Brands Board Shorts

    Assorted Brands

    Board Shorts
    Size Large kids
    $11.99 $9.59 20% off with code THANKU
    45% off estimated retail
    Wonder Nation Rash Guard (view 2)Wonder Nation Rash Guard (view 1)New With Tags
    View Product: Wonder Nation Rash Guard

    Wonder Nation

    Rash Guard
    Size 12 mo
    $8.99 $7.19 20% off with code THANKU
    18% off estimated retail
    Janie and Jack Board Shorts (view 2)Janie and Jack Board Shorts (view 1)
    View Product: Janie and Jack Board Shorts

    Janie and Jack

    Board Shorts
    Size 12-18 mo
    $6.99 $5.59 20% off with code THANKU
    61% 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 3 mo
    $8.99 $7.19 20% off with code THANKU
    65% off estimated retail
    The Bailey Boys Board Shorts (view 2)The Bailey Boys Board Shorts (view 1)
    View Product: The Bailey Boys Board Shorts

    The Bailey Boys

    Board Shorts
    Size 6 mo
    $9.99 $7.99 20% off with code THANKU
    33% off estimated retail
    Assorted Brands Wetsuit (view 2)Assorted Brands Wetsuit (view 1)
    View Product: Assorted Brands Wetsuit

    Assorted Brands

    Wetsuit
    Size 2T
    $12.99 $10.39 20% off with code THANKU
    70% 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 12 mo
    $9.99 $7.99 20% off with code THANKU
    23% off estimated retail
    Snapper Rock Rash Guard (view 2)Snapper Rock Rash Guard (view 1)
    View Product: Snapper Rock Rash Guard

    Snapper Rock

    Rash Guard
    Size 6-12 mo
    $7.99 $6.39 20% off with code THANKU
    50% off estimated retail
    Unbranded Rash Guard (view 2)Unbranded Rash Guard (view 1)
    View Product: Unbranded Rash Guard

    Unbranded

    Rash Guard
    Size 6-9 mo
    $7.99 $6.39 20% off with code THANKU
    63% 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 mo
    $11.99 $9.59 20% off with code THANKU
    72% off estimated retail
    Just One You Made by Carter's Rash Guard (view 2)Just One You Made by Carter's Rash Guard (view 1)
    View Product: Just One You Made by Carter's Rash Guard

    Just One You Made by Carter's

    Rash Guard
    Size 12 mo
    $8.99 $7.19 20% off with code THANKU
    18% 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 Medium infants
    $10.99 $8.79 20% off with code THANKU
    31% off estimated retail
    Wonder Nation Rash Guard (view 2)Wonder Nation Rash Guard (view 1)New With Tags
    View Product: Wonder Nation Rash Guard

    Wonder Nation

    Rash Guard
    Size 3-6 mo
    $8.99 $7.19 20% off with code THANKU
    18% off estimated retail
    Unbranded Wetsuit (view 2)Unbranded Wetsuit (view 1)
    View Product: Unbranded Wetsuit

    Unbranded

    Wetsuit
    Size 10
    $22.99 $18.39 20% off with code THANKU
    64% off estimated retail
    Janie and Jack Wetsuit (view 2)Janie and Jack Wetsuit (view 1)
    View Product: Janie and Jack Wetsuit

    Janie and Jack

    Wetsuit
    Size 0-3 mo
    $19.99 $14.99 25% off with code THANKU
    63% 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
    $17.99 $12.59 30% off with code THANKU
    40% 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 3 mo
    $8.99 $7.19 20% off with code THANKU
    65% off estimated retail
    H&M Board Shorts (view 2)H&M Board Shorts (view 1)Price Drop
    View Product: H&M Board Shorts

    H&M

    Board Shorts
    Size 3-6 mo
    $7.99 $6.39 20% off with code THANKU
    42% 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 9 mo
    $14.99 $11.24 25% off with code THANKU
    31% 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
    $8.99 $7.19 20% off with code THANKU
    66% 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 Small infants
    $6.99 $5.59 20% off with code THANKU
    50% 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
    $7.99 $6.39 20% off with code THANKU
    42% off estimated retail
    Body Glove Rash Guard (view 2)Body Glove Rash Guard (view 1)Price Drop
    View Product: Body Glove Rash Guard

    Body Glove

    Rash Guard
    Size 12 mo
    $6.99 $5.59 20% off with code THANKU
    73% off estimated retail
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