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Shop Women's Swimwear at up to 90% off estimated retail! thredUP has a huge selection of gently used women's swimwear. Find bikinis, one-pieces, board shorts and cover ups from brands like Seafolly, Aqua or Speedo at thredUP.

24" WaistRemove filterUnder $10Remove filterCottonRemove filter
15 items
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    Fashion Nova Swimsuit Cover Up (view 2)Fashion Nova Swimsuit Cover Up (view 1)
    View Product: Fashion Nova Swimsuit Cover Up

    Fashion Nova

    Swimsuit Cover Up
    Size XS
    $9.99
    47% off estimated retail
    Aqua Swimsuit Cover Up (view 2)Aqua Swimsuit Cover Up (view 1)New With Tags
    View Product: Aqua Swimsuit Cover Up

    Aqua

    Swimsuit Cover Up
    Size 0
    $8.99 $7.19 20% off with code THANKU
    84% off estimated retail
    D&Co. Swimsuit Cover Up (view 2)D&Co. Swimsuit Cover Up (view 1)
    View Product: D&Co. Swimsuit Cover Up

    D&Co.

    Swimsuit Cover Up
    Size XS
    $10.99 $8.79 20% off with code THANKU
    15% off estimated retail
    Gap Board Shorts (view 2)Gap Board Shorts (view 1)
    View Product: Gap Board Shorts

    Gap

    Board Shorts
    Size 00
    $10.99 $8.79 20% off with code THANKU
    71% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    90 Degree by Reflex Board Shorts (view 2)90 Degree by Reflex Board Shorts (view 1)
    View Product: 90 Degree by Reflex Board Shorts

    90 Degree by Reflex

    Board Shorts
    Size XS
    $5.99 $4.79 20% off with code THANKU
    84% off estimated retail
    Carole Hochman Board Shorts (view 2)Carole Hochman Board Shorts (view 1)
    View Product: Carole Hochman Board Shorts

    Carole Hochman

    Board Shorts
    Size XS
    $10.99 $8.79 20% off with code THANKU
    71% off estimated retail
    FP BEACH Swimsuit Top (view 2)FP BEACH Swimsuit Top (view 1)
    View Product: FP BEACH Swimsuit Top

    FP BEACH

    Swimsuit Top
    Size XS
    $11.99 $7.19 40% off with code THANKU
    68% 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 2
    $11.99 $8.39 30% off with code THANKU
    52% off estimated retail
    Assorted Brands Swimsuit Top (view 2)Assorted Brands Swimsuit Top (view 1)
    View Product: Assorted Brands Swimsuit Top

    Assorted Brands

    Swimsuit Top
    Size XS
    $10.99 $7.14 35% off with code THANKU
    56% off estimated retail
    Aqua Swimsuit Cover Up (view 2)Aqua Swimsuit Cover Up (view 1)New With Tags
    View Product: Aqua Swimsuit Cover Up

    Aqua

    Swimsuit Cover Up
    Size 0
    $10.99 $8.24 25% off with code THANKU
    81% off estimated retail
    Out From Under One Piece Swimsuit (view 2)Out From Under One Piece Swimsuit (view 1)Price Drop
    View Product: Out From Under One Piece Swimsuit

    Out From Under

    One Piece Swimsuit
    Size XS
    $11.99 $8.99 25% off with code THANKU
    78% off estimated retail
    Victoria's Secret Swimsuit Top (view 2)Victoria's Secret Swimsuit Top (view 1)Price Drop
    View Product: Victoria's Secret Swimsuit Top

    Victoria's Secret

    Swimsuit Top
    Size XS
    $9.99 $7.99 20% off with code THANKU
    68% off estimated retail
    Victoria's Secret Swimsuit Top (view 2)Victoria's Secret Swimsuit Top (view 1)Price Drop
    View Product: Victoria's Secret Swimsuit Top

    Victoria's Secret

    Swimsuit Top
    Size XS
    $9.99 $7.99 20% off with code THANKU
    68% off estimated retail
    Shein One Piece Swimsuit (view 2)Shein One Piece Swimsuit (view 1)Price Drop
    View Product: Shein One Piece Swimsuit

    Shein

    One Piece Swimsuit
    Size XXS
    $9.99 $5.99 40% off with code THANKU
    58% off estimated retail
    Helen Jon Swimsuit Top (view 2)Helen Jon Swimsuit Top (view 1)Price Drop
    View Product: Helen Jon Swimsuit Top

    Helen Jon

    Swimsuit Top
    Size XS
    $8.99 $7.19 20% off with code THANKU
    88% off estimated retail
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