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      • Boys' Clothing (Sizes 4 & Up)
        • Selected categorySwimwear
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        SMLXL456781010-1212Filter Applied14161820
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45 results

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    • Size: 12Remove filter
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    • Polo Ralph Lauren Boys Multicolor Tie-Dye Ombré Swim Trunks Sz 10/12
      Polo Ralph Lauren Boys Multicolor Tie-Dye Ombré Swim Trunks Sz 10/12
      Opens in a new window or tab
      Pre-Owned
      $24.00
      or Best Offer
      +$4.84 delivery
      Sponsored
    • BOY’S JOHNNIE-O SWIM TRUNKS - SIZE 12
      BOY’S JOHNNIE-O SWIM TRUNKS - SIZE 12
      Opens in a new window or tab
      Pre-Owned
      $12.00
      Was: $20.0040% off
      or Best Offer
      +$6.55 delivery
      Sponsored
    • Speedo Youth Size 12 Black Swim Jammers - NWT!
      Speedo Youth Size 12 Black Swim Jammers - NWT!
      Opens in a new window or tab
      Brand New
      5.0 out of 5 stars.
      (1)1 product rating - Speedo Youth Size 12 Black Swim Jammers - NWT!
      $4.99
      Buy It Now
      +$9.95 delivery
      Sponsored
    • NEW NWT Hurley Phantom Boys Kids Board Shorts Surf Swim Trunks - Blue Pink Green
      NEW NWT Hurley Phantom Boys Kids Board Shorts Surf Swim Trunks - Blue Pink Green
      Opens in a new window or tab
      Brand New
      $13.49
      or Best Offer
      +$8.71 delivery
      Sponsored
    • NWT Tommy Hilfiger Boys White Short-Sleeve Logo Rashguard T-Shirt Size M/12/14
      NWT Tommy Hilfiger Boys White Short-Sleeve Logo Rashguard T-Shirt Size M/12/14
      Opens in a new window or tab
      Brand New
      $14.99
      or Best Offer
      +$4.84 delivery
      Sponsored
    • Speedo Boy's Swimsuit Jammer Begin to Swim Solid Black, Size 12
      Speedo Boy's Swimsuit Jammer Begin to Swim Solid Black, Size 12
      Opens in a new window or tab
      Brand New
      5.0 out of 5 stars.
      (1)1 product rating - Speedo Boy's Swimsuit Jammer Begin to Swim Solid Black, Size 12
      $8.99
      Was: $44.9580% off
      Buy It Now
      +$6.20 delivery
      Sponsored
    • New! Boy's Under Armour Logo Swim Trunks Size Medium 10/12
      New! Boy's Under Armour Logo Swim Trunks Size Medium 10/12
      Opens in a new window or tab
      Brand New
      $29.95
      or Best Offer
      +$5.95 delivery
      Sponsored
    • New! Boy's NIKE Green Logo Swim Trunks Size Medium 10/12
      New! Boy's NIKE Green Logo Swim Trunks Size Medium 10/12
      Opens in a new window or tab
      Brand New
      $29.95
      or Best Offer
      +$5.95 delivery
      Sponsored
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        • Hurley Boy's Checkered Shark Boardshorts, Size 12/26
          Hurley Boy's Checkered Shark Boardshorts, Size 12/26
          Opens in a new window or tab
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          edeflore87 (8,711) 99.9%
        • Nintendo Super Mario Bros Swim Trunks Size 10/12
          Nintendo Super Mario Bros Swim Trunks Size 10/12
          Opens in a new window or tab
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        • BOY’S JOHNNIE-O Boys SWIM TRUNKS Shorts - SIZE 12 *****READ*** Blue
          BOY’S JOHNNIE-O Boys SWIM TRUNKS Shorts - SIZE 12 *****READ*** Blue
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          thatchickfromthegym (2,509) 99.6%
        • Hurley Kids' Boys' Youth Striped Logo Boardshorts - Navy/Lime
          Hurley Kids' Boys' Youth Striped Logo Boardshorts - Navy/Lime
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          sonicgears (69,421) 99.7%
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        • Lee Cooper Boys' Swim Trunks. Color Black. Gift For Child Aged 4 To
          Lee Cooper Boys' Swim Trunks. Color Black. Gift For Child Aged 4 To
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    • Hurley Boy's Checkered Shark Boardshorts, Size 12/26
      Hurley Boy's Checkered Shark Boardshorts, Size 12/26
      Opens in a new window or tab
      Pre-Owned
      $14.99
      or Best Offer
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    • New! Boy's Under Armour Logo Swim Trunks Size Medium 10/12
      New! Boy's Under Armour Logo Swim Trunks Size Medium 10/12
      Opens in a new window or tab
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    • LACOSTE Boys Swim Shorts Size 12  Lacoste Logo 1927
      LACOSTE Boys Swim Shorts Size 12 Lacoste Logo 1927
      Opens in a new window or tab
      Pre-Owned
      $11.99
      Was: $15.9925% off
      or Best Offer
      +$8.99 delivery
      Free returns
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    • New! Boy's Zero Xposur Swim Trunks and Goggles Size Medium 10/12
      New! Boy's Zero Xposur Swim Trunks and Goggles Size Medium 10/12
      Opens in a new window or tab
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      $24.95
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    • Speedo Shorts Boys 12 Black Jammer Nylona Spandex Blend Drawstring Swim
      Speedo Shorts Boys 12 Black Jammer Nylona Spandex Blend Drawstring Swim
      Opens in a new window or tab
      Pre-Owned
      5.0 out of 5 stars.
      (1)1 product rating - Speedo Shorts Boys 12 Black Jammer Nylona Spandex Blend Drawstring Swim
      $13.19
      Was: $23.9945% off
      or Best Offer
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    • Moncler blue swimsuit boxer style stripes on the sides, logo patch 12Y
      Moncler blue swimsuit boxer style stripes on the sides, logo patch 12Y
      Opens in a new window or tab
      Brand New
      $99.00
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      +$19.00 delivery
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    • Abercrombie Kids Swim Trunks Bathing Suit Confetti  Board Shorts Kids Size 11/12
      Abercrombie Kids Swim Trunks Bathing Suit Confetti Board Shorts Kids Size 11/12
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    • Nintendo Super Mario Bros Swim Trunks Size 10/12
      Nintendo Super Mario Bros Swim Trunks Size 10/12
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    • New! Boy's Zero Xposur Swim Trunks and Goggles Size Medium 10/12
      New! Boy's Zero Xposur Swim Trunks and Goggles Size Medium 10/12
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    • Hurley Boys' Size 12 Board Shorts Striped, No Liner, Beach Kidcore Surf Swim
      Hurley Boys' Size 12 Board Shorts Striped, No Liner, Beach Kidcore Surf Swim
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    • Hurley Kids' Boys' Youth Striped Logo Boardshorts - Navy/Lime
      Hurley Kids' Boys' Youth Striped Logo Boardshorts - Navy/Lime
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    • GAP Surf Kids Board Swim Shorts Boy XL (12) Reg Navy & Red Striped Very Nice EUC
      GAP Surf Kids Board Swim Shorts Boy XL (12) Reg Navy & Red Striped Very Nice EUC
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          Hurley Kids' Boys' Youth Striped Logo Boardshorts - Navy/Lime
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        • Speedo Boy's Training Swim Jammer - 2025
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          Speedo Boy's Training Swim Jammer - 2025
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    • No Boundaries Kids Size 12 Aquawave Black Rash Guard Short Sleeve Swim Surf
      No Boundaries Kids Size 12 Aquawave Black Rash Guard Short Sleeve Swim Surf
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    • BOY’S JOHNNIE-O Boys SWIM TRUNKS Shorts - SIZE 12 *****READ*** Blue
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