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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.

CottonRemove filter$25 - $50Remove filter
68 items
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    Seafolly Swimsuit Cover Up (view 2)Seafolly Swimsuit Cover Up (view 1)New With Tags
    View Product: Seafolly Swimsuit Cover Up

    Seafolly

    Swimsuit Cover Up
    Size One size
    $46.99
    72% off estimated retail
    Seafolly Swimsuit Cover Up (view 2)Seafolly Swimsuit Cover Up (view 1)
    View Product: Seafolly Swimsuit Cover Up

    Seafolly

    Swimsuit Cover Up
    Size One size
    $41.99
    75% off estimated retail
    Seafolly Swimsuit Cover Up (view 2)Seafolly Swimsuit Cover Up (view 1)
    View Product: Seafolly Swimsuit Cover Up

    Seafolly

    Swimsuit Cover Up
    Size One size
    $47.99
    72% off estimated retail
    Polo by Ralph Lauren Swimsuit Cover Up (view 2)Polo by Ralph Lauren Swimsuit Cover Up (view 1)
    View Product: Polo by Ralph Lauren Swimsuit Cover Up

    Polo by Ralph Lauren

    Swimsuit Cover Up
    Size Med
    $29.99
    68% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Seafolly Swimsuit Cover Up (view 2)Seafolly Swimsuit Cover Up (view 1)
    View Product: Seafolly Swimsuit Cover Up

    Seafolly

    Swimsuit Cover Up
    Size Sm
    $49.99
    70% off estimated retail
    Cynthia Ashby Swimsuit Cover Up (view 2)Cynthia Ashby Swimsuit Cover Up (view 1)
    View Product: Cynthia Ashby Swimsuit Cover Up

    Cynthia Ashby

    Swimsuit Cover Up
    Size One size
    $33.99
    83% off estimated retail
    Elomi Swimsuit Bottoms (view 2)Elomi Swimsuit Bottoms (view 1)New With Tags
    View Product: Elomi Swimsuit Bottoms

    Elomi

    Swimsuit Bottoms
    Size 18 Plus
    $28.99
    71% off estimated retail
    Kona Sol Swimsuit Cover Up (view 2)Kona Sol Swimsuit Cover Up (view 1)
    View Product: Kona Sol Swimsuit Cover Up

    Kona Sol

    Swimsuit Cover Up
    Size Sm
    $28.99
    23% off estimated retail
    Lemlem Swimsuit Cover Up (view 2)Lemlem Swimsuit Cover Up (view 1)
    View Product: Lemlem Swimsuit Cover Up

    Lemlem

    Swimsuit Cover Up
    Size One size
    $40.99
    73% off estimated retail
    Juicy Couture Swimsuit Cover Up (view 2)Juicy Couture Swimsuit Cover Up (view 1)
    View Product: Juicy Couture Swimsuit Cover Up

    Juicy Couture

    Swimsuit Cover Up
    Size Med
    $33.99
    70% off estimated retail
    Frankies Bikinis Swimsuit Top (view 2)Frankies Bikinis Swimsuit Top (view 1)
    View Product: Frankies Bikinis Swimsuit Top

    Frankies Bikinis

    Swimsuit Top
    Size Sm
    $30.99
    59% off estimated retail
    Marc by Marc Jacobs Swimsuit Cover Up (view 2)Marc by Marc Jacobs Swimsuit Cover Up (view 1)
    View Product: Marc by Marc Jacobs Swimsuit Cover Up

    Marc by Marc Jacobs

    Swimsuit Cover Up
    Size Med
    $36.99
    80% off estimated retail
    Athleta Board Shorts (view 2)Athleta Board Shorts (view 1)
    View Product: Athleta Board Shorts

    Athleta

    Board Shorts
    Size 3X Plus
    $28.99
    50% off estimated retail
    Summersalt Swimsuit Top (view 2)Summersalt Swimsuit Top (view 1)
    View Product: Summersalt Swimsuit Top

    Summersalt

    Swimsuit Top
    Size 20 Plus
    $29.99
    53% off estimated retail
    Shoshanna Swimsuit Cover Up (view 2)Shoshanna Swimsuit Cover Up (view 1)
    View Product: Shoshanna Swimsuit Cover Up

    Shoshanna

    Swimsuit Cover Up
    Size Med
    $39.99
    83% off estimated retail
    Lucky Brand Swimsuit Cover Up (view 2)Lucky Brand Swimsuit Cover Up (view 1)
    View Product: Lucky Brand Swimsuit Cover Up

    Lucky Brand

    Swimsuit Cover Up
    Size XS
    $30.99
    73% off estimated retail
    Rays for Days Swimsuit Cover Up (view 2)Rays for Days Swimsuit Cover Up (view 1)
    View Product: Rays for Days Swimsuit Cover Up

    Rays for Days

    Swimsuit Cover Up
    Size One size
    $31.99
    81% off estimated retail
    Maaji One Piece Swimsuit (view 2)Maaji One Piece Swimsuit (view 1)New With Tags
    View Product: Maaji One Piece Swimsuit

    Maaji

    One Piece Swimsuit
    Size Sm
    $46.99
    69% off estimated retail
    Brazilian Bikini Swimsuits Two Piece Swimsuit (view 2)Brazilian Bikini Swimsuits Two Piece Swimsuit (view 1)New With Tags
    View Product: Brazilian Bikini Swimsuits Two Piece Swimsuit

    Brazilian Bikini Swimsuits

    Two Piece Swimsuit
    Size Lg
    $32.99
    65% off estimated retail
    Agua Bendita Swimsuit Top (view 2)Agua Bendita Swimsuit Top (view 1)New With Tags
    View Product: Agua Bendita Swimsuit Top

    Agua Bendita

    Swimsuit Top
    Size Med
    $51.99
    60% off estimated retail
    Lauren by Ralph Lauren Swimsuit Cover Up (view 2)Lauren by Ralph Lauren Swimsuit Cover Up (view 1)
    View Product: Lauren by Ralph Lauren Swimsuit Cover Up

    Lauren by Ralph Lauren

    Swimsuit Cover Up
    Size Sm
    $38.99
    58% off estimated retail
    Paula Beachwear Swimsuit Cover Up (view 2)Paula Beachwear Swimsuit Cover Up (view 1)
    View Product: Paula Beachwear Swimsuit Cover Up

    Paula Beachwear

    Swimsuit Cover Up
    Size Sm
    $42.99
    75% off estimated retail
    Rock Flower Paper Swimsuit Cover Up (view 2)Rock Flower Paper Swimsuit Cover Up (view 1)
    View Product: Rock Flower Paper Swimsuit Cover Up

    Rock Flower Paper

    Swimsuit Cover Up
    Size Sm
    $28.99 $20.29 30% off with code THANKU
    61% off estimated retail
    Marc by Marc Jacobs Swimsuit Cover Up (view 2)Marc by Marc Jacobs Swimsuit Cover Up (view 1)
    View Product: Marc by Marc Jacobs Swimsuit Cover Up

    Marc by Marc Jacobs

    Swimsuit Cover Up
    Size Med
    $39.99 $20.00 50% off with code THANKU
    78% off estimated retail
    Sunshine 79 Swimsuit Cover Up (view 2)Sunshine 79 Swimsuit Cover Up (view 1)New With Tags
    View Product: Sunshine 79 Swimsuit Cover Up

    Sunshine 79

    Swimsuit Cover Up
    Size XL
    $38.99 $25.34 35% off with code THANKU
    74% off estimated retail
    She Made Me Swimsuit Bottoms (view 2)She Made Me Swimsuit Bottoms (view 1)
    View Product: She Made Me Swimsuit Bottoms

    She Made Me

    Swimsuit Bottoms
    Size Lg
    $27.99 $19.59 30% off with code THANKU
    68% off estimated retail
    Vineyard Vines Swimsuit Cover Up (view 2)Vineyard Vines Swimsuit Cover Up (view 1)
    View Product: Vineyard Vines Swimsuit Cover Up

    Vineyard Vines

    Swimsuit Cover Up
    Size Lg
    $39.99 $21.99 45% off with code THANKU
    70% off estimated retail
    In Your Arms Swimsuit Bottoms (view 2)In Your Arms Swimsuit Bottoms (view 1)New With Tags
    View Product: In Your Arms Swimsuit Bottoms

    In Your Arms

    Swimsuit Bottoms
    Size Lg
    $36.99 $24.04 35% off with code THANKU
    63% off estimated retail
    Solid & Striped Swimsuit Bottoms (view 2)Solid & Striped Swimsuit Bottoms (view 1)
    View Product: Solid & Striped Swimsuit Bottoms

    Solid & Striped

    Swimsuit Bottoms
    Size Lg
    $29.99 $16.49 45% off with code THANKU
    73% off estimated retail
    Charlie Holiday. Swimsuit Cover Up (view 2)Charlie Holiday. Swimsuit Cover Up (view 1)
    View Product: Charlie Holiday. Swimsuit Cover Up

    Charlie Holiday.

    Swimsuit Cover Up
    Size 10
    $32.99 $19.79 40% off with code THANKU
    71% off estimated retail
    Lauren by Ralph Lauren Swimsuit Cover Up (view 2)Lauren by Ralph Lauren Swimsuit Cover Up (view 1)New With Tags
    View Product: Lauren by Ralph Lauren Swimsuit Cover Up

    Lauren by Ralph Lauren

    Swimsuit Cover Up
    Size Lg
    $46.99 $32.89 30% off with code THANKU
    71% off estimated retail
    Roberta Roller Rabbit Swimsuit Cover Up (view 2)Roberta Roller Rabbit Swimsuit Cover Up (view 1)New With Tags
    View Product: Roberta Roller Rabbit Swimsuit Cover Up

    Roberta Roller Rabbit

    Swimsuit Cover Up
    Size Sm
    $35.99 $19.79 45% off with code THANKU
    62% off estimated retail
    Nanette Lepore Swimsuit Top (view 2)Nanette Lepore Swimsuit Top (view 1)
    View Product: Nanette Lepore Swimsuit Top

    Nanette Lepore

    Swimsuit Top
    Size Med
    $38.99 $19.50 50% off with code THANKU
    51% off estimated retail
    Sundry Swimsuit Cover Up (view 2)Sundry Swimsuit Cover Up (view 1)
    View Product: Sundry Swimsuit Cover Up

    Sundry

    Swimsuit Cover Up
    Size XS
    $27.99 $19.59 30% off with code THANKU
    75% off estimated retail
    Magicsuit Swimsuit Cover Up (view 2)Magicsuit Swimsuit Cover Up (view 1)
    View Product: Magicsuit Swimsuit Cover Up

    Magicsuit

    Swimsuit Cover Up
    Size Med
    $43.99 $22.00 50% off with code THANKU
    61% off estimated retail
    Lucky Brand Swimsuit Cover Up (view 2)Lucky Brand Swimsuit Cover Up (view 1)
    View Product: Lucky Brand Swimsuit Cover Up

    Lucky Brand

    Swimsuit Cover Up
    Size Sm
    $30.99 $17.04 45% off with code THANKU
    73% off estimated retail
    Solid & Striped Swimsuit Top (view 2)Solid & Striped Swimsuit Top (view 1)
    View Product: Solid & Striped Swimsuit Top

    Solid & Striped

    Swimsuit Top
    Size Lg
    $28.99 $15.94 45% off with code THANKU
    74% off estimated retail
    Everlane One Piece Swimsuit (view 2)Everlane One Piece Swimsuit (view 1)
    View Product: Everlane One Piece Swimsuit

    Everlane

    One Piece Swimsuit
    Size Sm
    $51.99 $41.59 20% off with code THANKU
    45% off estimated retail
    Walter Baker Swimsuit Cover Up (view 2)Walter Baker Swimsuit Cover Up (view 1)
    View Product: Walter Baker Swimsuit Cover Up

    Walter Baker

    Swimsuit Cover Up
    Size One size
    $43.99
    74% off estimated retail
    Gianni Bini Swimsuit Cover Up (view 2)Gianni Bini Swimsuit Cover Up (view 1)
    View Product: Gianni Bini Swimsuit Cover Up

    Gianni Bini

    Swimsuit Cover Up
    Size Sm
    $34.99 $22.74 35% off with code THANKU
    63% off estimated retail
    J.Crew Swimsuit Cover Up (view 2)J.Crew Swimsuit Cover Up (view 1)Flawed Gem
    View Product: J.Crew Swimsuit Cover Up

    J.Crew

    Swimsuit Cover Up
    Size XS
    $39.99 $21.99 45% off with code THANKU
    72% off estimated retail
    Marc by Marc Jacobs Swimsuit Cover Up (view 2)Marc by Marc Jacobs Swimsuit Cover Up (view 1)Flawed Gem
    View Product: Marc by Marc Jacobs Swimsuit Cover Up

    Marc by Marc Jacobs

    Swimsuit Cover Up
    Size Lg
    $32.99 $16.50 50% off with code THANKU
    65% off estimated retail
    Lucky Brand Swimsuit Cover Up (view 2)Lucky Brand Swimsuit Cover Up (view 1)
    View Product: Lucky Brand Swimsuit Cover Up

    Lucky Brand

    Swimsuit Cover Up
    Size XS
    $30.99 $20.14 35% off with code THANKU
    73% off estimated retail
    ViX by Paula Hermanny Swimsuit Cover Up (view 2)ViX by Paula Hermanny Swimsuit Cover Up (view 1)New With Tags
    View Product: ViX by Paula Hermanny Swimsuit Cover Up

    ViX by Paula Hermanny

    Swimsuit Cover Up
    Size Med
    $39.99 $25.99 35% off with code THANKU
    72% off estimated retail
    Luxe by Lisa Vogel Swimsuit Cover Up (view 2)Luxe by Lisa Vogel Swimsuit Cover Up (view 1)New With Tags
    View Product: Luxe by Lisa Vogel Swimsuit Cover Up

    Luxe by Lisa Vogel

    Swimsuit Cover Up
    Size Med
    $49.99 $39.99 20% off with code THANKU
    76% off estimated retail
    BCBGMAXAZRIA Swimsuit Cover Up (view 2)BCBGMAXAZRIA Swimsuit Cover Up (view 1)
    View Product: BCBGMAXAZRIA Swimsuit Cover Up

    BCBGMAXAZRIA

    Swimsuit Cover Up
    Size XS
    $30.99 $21.69 30% off with code THANKU
    84% off estimated retail
    Le Besi Two Piece Swimsuit (view 2)Le Besi Two Piece Swimsuit (view 1)
    View Product: Le Besi Two Piece Swimsuit

    Le Besi

    Two Piece Swimsuit
    Size Lg
    $30.99 $20.14 35% off with code THANKU
    67% off estimated retail
    Kona Sol Swimsuit Cover Up (view 2)Kona Sol Swimsuit Cover Up (view 1)New With Tags
    View Product: Kona Sol Swimsuit Cover Up

    Kona Sol

    Swimsuit Cover Up
    Size Med
    $27.99 $14.00 50% off with code THANKU
    26% off estimated retail
    Birdsong Swimsuit Bottoms (view 2)Birdsong Swimsuit Bottoms (view 1)New With Tags
    View Product: Birdsong Swimsuit Bottoms

    Birdsong

    Swimsuit Bottoms
    Size Lg
    $37.99 $26.59 30% off with code THANKU
    62% off estimated retail
    Frankies Bikinis Swimsuit Cover Up (view 2)Frankies Bikinis Swimsuit Cover Up (view 1)Flawed Gem
    View Product: Frankies Bikinis Swimsuit Cover Up

    Frankies Bikinis

    Swimsuit Cover Up
    Size XS
    $28.99 $15.94 45% off with code THANKU
    74% off estimated retail
    Splendid One Piece Swimsuit (view 2)Splendid One Piece Swimsuit (view 1)
    View Product: Splendid One Piece Swimsuit

    Splendid

    One Piece Swimsuit
    Size Sm
    $44.99 $31.49 30% off with code THANKU
    56% off estimated retail
    Vineyard Vines Board Shorts (view 2)Vineyard Vines Board Shorts (view 1)
    View Product: Vineyard Vines Board Shorts

    Vineyard Vines

    Board Shorts
    Size XS
    $30.99 $20.14 35% off with code THANKU
    65% off estimated retail
    Malia Mills Swimsuit Bottoms (view 2)Malia Mills Swimsuit Bottoms (view 1)
    View Product: Malia Mills Swimsuit Bottoms

    Malia Mills

    Swimsuit Bottoms
    Size 4
    $33.99 $22.09 35% off with code THANKU
    77% off estimated retail
    Mara Hoffman Swimsuit Bottoms (view 2)Mara Hoffman Swimsuit Bottoms (view 1)
    View Product: Mara Hoffman Swimsuit Bottoms

    Mara Hoffman

    Swimsuit Bottoms
    Size XS
    $32.99 $18.14 45% off with code THANKU
    70% off estimated retail
    Undercover Swimsuit Cover Up (view 2)Undercover Swimsuit Cover Up (view 1)
    View Product: Undercover Swimsuit Cover Up

    Undercover

    Swimsuit Cover Up
    Size 00
    $50.99 $30.59 40% off with code THANKU
    77% off estimated retail
    Free People Swimsuit Cover Up (view 2)Free People Swimsuit Cover Up (view 1)
    View Product: Free People Swimsuit Cover Up

    Free People

    Swimsuit Cover Up
    Size Sm
    $34.99 $19.24 45% off with code THANKU
    66% off estimated retail
    Suboo Swimsuit Bottoms (view 2)Suboo Swimsuit Bottoms (view 1)
    View Product: Suboo Swimsuit Bottoms

    Suboo

    Swimsuit Bottoms
    Size Lg
    $35.99 $19.79 45% off with code THANKU
    64% off estimated retail
    Suboo Swimsuit Top (view 2)Suboo Swimsuit Top (view 1)
    View Product: Suboo Swimsuit Top

    Suboo

    Swimsuit Top
    Size Lg
    $48.99 $26.94 45% off with code THANKU
    65% off estimated retail
    Vineyard Vines Swimsuit Cover Up (view 2)Vineyard Vines Swimsuit Cover Up (view 1)
    View Product: Vineyard Vines Swimsuit Cover Up

    Vineyard Vines

    Swimsuit Cover Up
    Size XXS
    $46.99 $28.19 40% off with code THANKU
    64% off estimated retail
    Solitaire Swim Swimsuit Cover Up (view 2)Solitaire Swim Swimsuit Cover Up (view 1)
    View Product: Solitaire Swim Swimsuit Cover Up

    Solitaire Swim

    Swimsuit Cover Up
    Size Med
    $27.99 $11.20 60% off with code THANKU
    50% off estimated retail
    Malia Mills Swimsuit Top (view 2)Malia Mills Swimsuit Top (view 1)Price Drop
    View Product: Malia Mills Swimsuit Top

    Malia Mills

    Swimsuit Top
    Size 34 waist
    $32.99 $19.79 40% off with code THANKU
    78% off estimated retail
    Speedo One Piece Swimsuit (view 2)Speedo One Piece Swimsuit (view 1)Price Drop
    View Product: Speedo One Piece Swimsuit

    Speedo

    One Piece Swimsuit
    Size XS
    $35.99 $18.00 50% off with code THANKU
    50% off estimated retail
    Calypso St. Barth Swimsuit Top (view 2)Calypso St. Barth Swimsuit Top (view 1)Price Drop
    View Product: Calypso St. Barth Swimsuit Top

    Calypso St. Barth

    Swimsuit Top
    Size Sm
    $43.99 $22.00 50% off with code THANKU
    71% off estimated retail
    Michael Stars Swimsuit Cover Up (view 2)Michael Stars Swimsuit Cover Up (view 1)Price Drop
    View Product: Michael Stars Swimsuit Cover Up

    Michael Stars

    Swimsuit Cover Up
    Size XS
    $36.99 $18.50 50% off with code THANKU
    72% off estimated retail
    Lusana Swimsuit Top (view 2)Lusana Swimsuit Top (view 1)New With Tags
    View Product: Lusana Swimsuit Top

    Lusana

    Swimsuit Top
    Size 4
    $37.99 $24.69 35% off with code THANKU
    75% off estimated retail
    Suboo Swimsuit Bottoms (view 2)Suboo Swimsuit Bottoms (view 1)Price Drop
    View Product: Suboo Swimsuit Bottoms

    Suboo

    Swimsuit Bottoms
    Size Med
    $43.99 $22.00 50% off with code THANKU
    65% off estimated retail
    Stella & Dot Swimsuit Cover Up (view 2)Stella & Dot Swimsuit Cover Up (view 1)Price Drop
    View Product: Stella & Dot Swimsuit Cover Up

    Stella & Dot

    Swimsuit Cover Up
    Size 0
    $32.99 $18.14 45% off with code THANKU
    56% off estimated retail
    Ermanno Scervino Swimsuit Bottoms (view 2)Ermanno Scervino Swimsuit Bottoms (view 1)Price Drop
    View Product: Ermanno Scervino Swimsuit Bottoms

    Ermanno Scervino

    Swimsuit Bottoms
    Size XS
    $46.99 $28.19 40% off with code THANKU
    80% off estimated retail
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