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      • Boys' Clothing (Sizes 4 & Up)
        • Selected categorySwimwear
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39 results

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    • SportsRemove filter
    • Size: 18Remove filter
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    • Nike 6.0 Board Shorts Boys 18 Swim Trunks Geometric Suit
      Nike 6.0 Board Shorts Boys 18 Swim Trunks Geometric Suit
      Opens in a new window or tab
      Pre-Owned
      $12.70
      Was: $15.8820% off
      or Best Offer
      +$7.88 delivery
      Extra 20% off with coupon
      Sponsored
    • Nike Swim Kids Long Sleeve Shirt Have A Nike Day Graphic Blue Dri Fit UPF 40+
      Nike Swim Kids Long Sleeve Shirt Have A Nike Day Graphic Blue Dri Fit UPF 40+
      Opens in a new window or tab
      Brand New
      $15.29
      Was: $17.9915% off
      Buy It Now
      +$4.14 delivery
      Free returns
      Sponsored
      Top Rated Plus
    • Nike 6.0 Board Shorts Boys 18 Swim Trunks Geometric Gradient Teal Purple Suit
      Nike 6.0 Board Shorts Boys 18 Swim Trunks Geometric Gradient Teal Purple Suit
      Opens in a new window or tab
      Pre-Owned
      $15.95
      or Best Offer
      +$6.00 delivery in 2-4 days
      Sponsored
    • Kids Boys Swim Shorts Tights Rash Guard Sport Swimwear UPF 50+ Trunks Active
      Kids Boys Swim Shorts Tights Rash Guard Sport Swimwear UPF 50+ Trunks Active
      Opens in a new window or tab
      New (Other)
      $14.07 to $16.64
      Was: $18.098% off
      Buy It Now
      +$3.99 delivery
      from China
      Sponsored
    • OLD NAVY SWIM TRUNK BOARDSHORTS Drawstring & Lined Boy’s XXL 18 Nice Print & EUC
      OLD NAVY SWIM TRUNK BOARDSHORTS Drawstring & Lined Boy’s XXL 18 Nice Print & EUC
      Opens in a new window or tab
      Pre-Owned
      $6.99
      Buy It Now
      +$4.99 delivery
      Sponsored
    • Hurley Kids' Boys' Youth Block Party 17" Boardshorts
      Hurley Kids' Boys' Youth Block Party 17" Boardshorts
      Opens in a new window or tab
      Brand New
      $30.00
      List price: $55.0045% off
      Buy It Now
      Free delivery in 2-4 days
      Buy 1, get 1 20% off with coupon
      Sponsored
    • New Hurley Boys Shark  Black Checkered Board Shorts Size 18/29Inseam 8” NWT
      New Hurley Boys Shark Black Checkered Board Shorts Size 18/29Inseam 8” NWT
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      Brand New
      $14.00
      Was: $20.0030% off
      Buy It Now
      +$5.80 delivery
      Sponsored
    • NEW Hurley Swim Shorts Trunks Teen Youth Sz Waist 18/29 Neptune Blue 9.5” Inseam
      NEW Hurley Swim Shorts Trunks Teen Youth Sz Waist 18/29 Neptune Blue 9.5” Inseam
      Opens in a new window or tab
      Brand New
      $27.00
      or Best Offer
      +$5.80 delivery
      Sponsored
    • SPEEDO size 6 Boys Jammer Swim Shorts  UPF 50+ Sun Protection BLACK *NEW*
      SPEEDO size 6 Boys Jammer Swim Shorts UPF 50+ Sun Protection BLACK *NEW*
      Opens in a new window or tab
      Brand New
      $15.00
      Buy It Now
      +$6.55 delivery
      Sponsored
    • SPEEDO size 7 Boys Jammer Swim Shorts  UPF 50+ Sun Protection BLACK *NEW* A24
      SPEEDO size 7 Boys Jammer Swim Shorts UPF 50+ Sun Protection BLACK *NEW* A24
      Opens in a new window or tab
      Brand New
      $13.00
      or Best Offer
      +$8.19 delivery
      Sponsored
    • Land’s End Boys Sport Swim Shorts With Hydroliner Sz XXL(18) NWOT
      Land’s End Boys Sport Swim Shorts With Hydroliner Sz XXL(18) NWOT
      Opens in a new window or tab
      New (Other)
      $28.00
      or Best Offer
      +$8.55 delivery
      Sponsored
    • NWT Salt Life Boys Performance Swim / Active Trunks Size Small Size 6/7
      NWT Salt Life Boys Performance Swim / Active Trunks Size Small Size 6/7
      Opens in a new window or tab
      Brand New
      $15.00
      or Best Offer
      +$4.84 delivery
      Sponsored
    • Nike 6.0 Board Shorts Boys 18 Swim Trunks Gradient Green Purple Suit 30x10
      Nike 6.0 Board Shorts Boys 18 Swim Trunks Gradient Green Purple Suit 30x10
      Opens in a new window or tab
      Pre-Owned
      $10.42
      Was: $13.0220% off
      Buy It Now
      +$7.25 delivery
      Free returns
      Sponsored
      Top Rated Plus
    • Hurley Boys Geometric Board Shorts Yellow Size 18 Swim Trunks
      Hurley Boys Geometric Board Shorts Yellow Size 18 Swim Trunks
      Opens in a new window or tab
      Pre-Owned
      $12.99
      or Best Offer
      +$4.71 delivery
      Sponsored
    • Vintage Y2K Nike Swim Trunks Boys Kids Toddler Size 7 Lightweight Mesh Lined
      Vintage Y2K Nike Swim Trunks Boys Kids Toddler Size 7 Lightweight Mesh Lined
      Opens in a new window or tab
      Pre-Owned
      $19.99
      Buy It Now
      +$6.55 delivery
      Sponsored
    • Kids Boys Swim Shorts With Drawstring Rash Guard Tights Swimwear Athletic Sport
      Kids Boys Swim Shorts With Drawstring Rash Guard Tights Swimwear Athletic Sport
      Opens in a new window or tab
      New (Other)
      $16.39 to $19.59
      Buy It Now
      +$3.99 delivery
      from China
      Sponsored
    • Boy's Kids Practice Racing Competition Racer Swim Jammer Swimwear Size 18,  XXS
      Boy's Kids Practice Racing Competition Racer Swim Jammer Swimwear Size 18, XXS
      Opens in a new window or tab
      Brand New
      $7.99
      0 bids · Time left6d 11h
      +$4.99 delivery
      Sponsored
    • Zeroxposur Swim Shorts Boys Large 7 Floral Stripe Trunks Water Sports Bottoms
      Zeroxposur Swim Shorts Boys Large 7 Floral Stripe Trunks Water Sports Bottoms
      Opens in a new window or tab
      Pre-Owned
      $8.88
      or Best Offer
      +$6.49 delivery
      Sponsored
    • Quiksilver Shorts Boys 7 Grey Comfort
      Quiksilver Shorts Boys 7 Grey Comfort
      Opens in a new window or tab
      Pre-Owned
      $11.69
      Was: $12.9910% off
      Buy It Now
      +$5.99 delivery
      Sponsored
    • adidas Kids Boy's Sport Shorts (Little Kids) Grey/Orange Size 7 NWT
      adidas Kids Boy's Sport Shorts (Little Kids) Grey/Orange Size 7 NWT
      Opens in a new window or tab
      Brand New
      $15.50
      Buy It Now
      Free delivery
      Sponsored
    • From our popular brands

      Based on number of views and purchases | Sponsored
        • Nike 6.0 Board Shorts Boys 18 Swim Trunks Geometric Suit
          Nike
          Nike 6.0 Board Shorts Boys 18 Swim Trunks Geometric Suit
          Opens in a new window or tab
          Pre-Owned
          $12.70
          +$7.88 delivery
          Extra 20% off with coupon
        • Nike Swim Kids Long Sleeve Shirt Have A Nike Day Graphic Blue Dri Fit UPF 40+
          Nike
          Nike Swim Kids Long Sleeve Shirt Have A Nike Day Graphic Blue Dri Fit UPF 40+
          Opens in a new window or tab
          Brand New
          $15.29
          +$4.14 delivery
        • Quiksilver Shorts Boys 7 Grey Comfort
          Quiksilver
          Quiksilver Shorts Boys 7 Grey Comfort
          Opens in a new window or tab
          Pre-Owned
          $11.69
          +$5.99 delivery
        • Hurley Tie-Dye Board Shorts Boy’s Neptune Blue Swim Trunks SIZE 18
          Hurley
          Hurley Tie-Dye Board Shorts Boy’s Neptune Blue Swim Trunks SIZE 18
          Opens in a new window or tab
          Brand New
          $17.99
          Free delivery
        • Speedo Boy's Training Swim Jammer - 2025
          Speedo
          Speedo Boy's Training Swim Jammer - 2025
          Opens in a new window or tab
          Brand New
          $29.50
          +$14.25 delivery
        • NEW Hurley solid heather blue boys youth sz 18 swim board shorts swimsuit
          Hurley
          NEW Hurley solid heather blue boys youth sz 18 swim board shorts swimsuit
          Opens in a new window or tab
          Brand New
          $15.88
          +$6.00 delivery
    • Boys Kids Training Racing Competition Trunk Swimwear Jammer Size 20 XS Boy's 6/7
      Boys Kids Training Racing Competition Trunk Swimwear Jammer Size 20 XS Boy's 6/7
      Opens in a new window or tab
      Brand New
      $6.99
      0 bids · Time left4d 11h
      +$4.99 delivery
      Sponsored
    • Hurley Board Shorts Boys Size 18 Drawstring Swim Trunks Brown - NWT
      Hurley Board Shorts Boys Size 18 Drawstring Swim Trunks Brown - NWT
      Opens in a new window or tab
      Brand New
      $16.99
      or Best Offer
      +$8.71 delivery
      Sponsored
    • Speedo Boy's Training Swim Jammer - 2025
      Speedo Boy's Training Swim Jammer - 2025
      Opens in a new window or tab
      Brand New
      $29.50
      Buy It Now
      +$14.25 delivery
      Sponsored
    • Boys' ombre color block Lined  swim shorts - art class Size Small 6/7
      Boys' ombre color block Lined swim shorts - art class Size Small 6/7
      Opens in a new window or tab
      Brand New
      $7.30
      Buy It Now
      +$6.40 delivery
      Sponsored
    • New! Philadelphia Phillies Swim/Board Shorts - Youth Size 18/20
      New! Philadelphia Phillies Swim/Board Shorts - Youth Size 18/20
      Opens in a new window or tab
      Brand New
      $16.00
      Buy It Now
      +$6.50 delivery
      Sponsored
    • Boys Child Swim Trucks Jammer Swimming Bottoms Shorts Swimwear Size 18 Boy's 5-6
      Boys Child Swim Trucks Jammer Swimming Bottoms Shorts Swimwear Size 18 Boy's 5-6
      Opens in a new window or tab
      Brand New
      $7.99
      0 bids · Time left5d 12h
      +$4.99 delivery
      Sponsored
    • Hurley Tie-Dye Board Shorts Boy’s Neptune Blue Swim Trunks SIZE 18
      Hurley Tie-Dye Board Shorts Boy’s Neptune Blue Swim Trunks SIZE 18
      Opens in a new window or tab
      Brand New
      $17.99
      Buy It Now
      Free delivery
      Sponsored
    • NEW Hurley solid heather blue boys youth sz 18 swim board shorts swimsuit
      NEW Hurley solid heather blue boys youth sz 18 swim board shorts swimsuit
      Opens in a new window or tab
      Brand New
      $15.88
      Buy It Now
      +$6.00 delivery
      Sponsored
    • Kids Boys Rash Guard Athletic Swimwear Sport Swim Shorts Surfing Swimsuit
      Kids Boys Rash Guard Athletic Swimwear Sport Swim Shorts Surfing Swimsuit
      Opens in a new window or tab
      New (Other)
      $12.13 to $14.99
      Was: $16.298% off
      Buy It Now
      +$3.99 delivery
      from China
      Sponsored
    • Place Sport Swim Trunks 18-24M Boys Blue Used
      Place Sport Swim Trunks 18-24M Boys Blue Used
      Opens in a new window or tab
      Pre-Owned
      $8.43
      Buy It Now
      +$6.95 delivery
      Sponsored
    • Boys Kids Competition Racing Training Racer Swimwear Jammer Trunk Size Boy's 5-6
      Boys Kids Competition Racing Training Racer Swimwear Jammer Trunk Size Boy's 5-6
      Opens in a new window or tab
      Brand New
      $17.99
      Was: $19.9910% off
      Buy It Now
      Free delivery
      Extra 5% off with coupon
      Sponsored
    • Little Boys Stripped Swimming Trunks Sport Place Size 7/8 Boys
      Little Boys Stripped Swimming Trunks Sport Place Size 7/8 Boys
      Opens in a new window or tab
      Pre-Owned
      $16.00
      or Best Offer
      +$4.84 delivery
      Sponsored
    • Boys Kids Bathing Suit Trunks Breathable Seamless Child Swimming Underwear 7-...
      Boys Kids Bathing Suit Trunks Breathable Seamless Child Swimming Underwear 7-...
      Opens in a new window or tab
      Brand New
      $33.81
      Buy It Now
      Free delivery
      Free returns
      Sponsored
    • Old Navy Swim Trunks Boys Size 7 Multicolor Surf Print Boardshorts Vacation Vibe
      Old Navy Swim Trunks Boys Size 7 Multicolor Surf Print Boardshorts Vacation Vibe
      Opens in a new window or tab
      Pre-Owned
      $8.22
      or Best Offer
      +$7.57 delivery
      Sponsored
    • Boys Kids Bathing Suit Trunks Breathable Seamless Child Swimming Underwear 7-...
      Boys Kids Bathing Suit Trunks Breathable Seamless Child Swimming Underwear 7-...
      Opens in a new window or tab
      Brand New
      $35.66
      Buy It Now
      Free delivery
      Free returns
      Sponsored
    • Hawke & Co Sport Boy's Swim Trunks Multi Colored UV Protection Size 7
      Hawke & Co Sport Boy's Swim Trunks Multi Colored UV Protection Size 7
      Opens in a new window or tab
      Brand New
      $6.99
      or Best Offer
      Free delivery
      Free returns
      Sponsored
    • NWT Boy's Sports Illustrated Lime Green Swim Trunks Shorts Size 18/20
      NWT Boy's Sports Illustrated Lime Green Swim Trunks Shorts Size 18/20
      Opens in a new window or tab
      Brand New
      $16.90
      or Best Offer
      Free delivery
      Sponsored
    • 4Pcs Maamgic Quick Dry Fabric Swim Slim Ocean Travel Sports Trunks Size 7
      4Pcs Maamgic Quick Dry Fabric Swim Slim Ocean Travel Sports Trunks Size 7
      Opens in a new window or tab
      Pre-Owned
      $45.00
      or Best Offer
      +$8.00 delivery
      Sponsored
    • Kids Boys Swim Shorts Rash Guard Sports Athletic Swimwear Quickly Dry Trunks
      Kids Boys Swim Shorts Rash Guard Sports Athletic Swimwear Quickly Dry Trunks
      Opens in a new window or tab
      Brand New
      $15.79 to $18.39
      Buy It Now
      +$3.99 delivery
      from China
      Sponsored
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