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      • Boys' Clothing (Sizes 4 & Up)
        • Selected categorySwimwear
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        SMLXL456781010-1212Filter Applied1414-161618
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41 results

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  • New with tags
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    or Best Offer
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    • Size: 12Remove filter
    • LogoRemove filter
    • BoyRemove filter
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    • Polo Ralph Lauren Baby Boy Red White Stripe Swim Trunks Size 12 Months Logo
      Polo Ralph Lauren Baby Boy Red White Stripe Swim Trunks Size 12 Months Logo
      Opens in a new window or tab
      Pre-Owned
      $9.00
      or Best Offer
      +$5.25 delivery
      Sponsored
    • 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
      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 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 HURLEY PHANTOM Stretch Boardshorts Youth Boy's Sz 12 / 26 NWT
      New HURLEY PHANTOM Stretch Boardshorts Youth Boy's Sz 12 / 26 NWT
      Opens in a new window or tab
      Brand New
      $9.99
      or Best Offer
      +$4.10 delivery
      Free returns
      Sponsored
      Top Rated Plus
    • 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
    • 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
      Free delivery
      Free returns
      Extra 8% off with coupon
      Sponsored
      Top Rated Plus
    • 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
    • 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 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
      Brand New
      $24.95
      or Best Offer
      +$6.95 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
    • Hurley Kids' Boys' Youth Striped Logo Boardshorts - Navy/Lime
      Hurley Kids' Boys' Youth Striped Logo Boardshorts - Navy/Lime
      Opens in a new window or tab
      Brand New
      $19.99
      List price: $50.0060% off
      Buy It Now
      Free delivery in 2-4 days
      Buy 1, get 1 20% off with coupon
      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!
      $7.98
      Buy It Now
      +$9.95 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
      $16.00
      Was: $20.0020% off
      or Best Offer
      +$6.55 delivery
      Sponsored
    • 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
      Opens in a new window or tab
      Pre-Owned
      $12.99
      or Best Offer
      +$8.71 delivery
      Sponsored
    • Nike 6.0 Board Shorts Boy Sz 12 Jellyfish Black Swim Trunks Unlined Medium
      Nike 6.0 Board Shorts Boy Sz 12 Jellyfish Black Swim Trunks Unlined Medium
      Opens in a new window or tab
      Pre-Owned
      $14.99
      or Best Offer
      +$5.00 delivery
      Sponsored
    • 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
      Opens in a new window or tab
      Pre-Owned
      $11.99
      or Best Offer
      +$6.00 delivery in 2-4 days
      Free returns
      Sponsored
      Top Rated Plus
    • 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
      +$4.94 delivery
      Free returns
      Extra 25% off with coupon
      Sponsored
      Top Rated Plus
    • NWT Hurley Boys Kids Board Shorts Swim Trunks Surf -White Stripe w/ Rainbow Logo
      NWT Hurley Boys Kids Board Shorts Swim Trunks Surf -White Stripe w/ Rainbow Logo
      Opens in a new window or tab
      Brand New
      $24.95
      Buy It Now
      Free delivery
      Free returns
      Save up to 20% when you buy more
      Sponsored
      Top Rated Plus
    • Da Hui Youth Boys Size 12 Long Sleeved Rash Guard Shirt Blue Black
      Da Hui Youth Boys Size 12 Long Sleeved Rash Guard Shirt Blue Black
      Opens in a new window or tab
      Pre-Owned
      $9.99
      or Best Offer
      +$5.99 delivery
      Sponsored
    • Hurley Board Shorts Boys Size 12 Swim Trunks no liner Beach Kidcore Surf
      Hurley Board Shorts Boys Size 12 Swim Trunks no liner Beach Kidcore Surf
      Opens in a new window or tab
      Pre-Owned
      $19.99
      or Best Offer
      +$7.81 delivery
      Sponsored
    • Maui & Sons Swim/Board Trunks-Boys Size 12-Stripes-Waves Lime-Turquoise-Grey
      Maui & Sons Swim/Board Trunks-Boys Size 12-Stripes-Waves Lime-Turquoise-Grey
      Opens in a new window or tab
      Pre-Owned
      $17.20
      or Best Offer
      +$6.55 delivery
      Extra 10% off with coupon
      Sponsored
    • Volcom Boys 12 Blue Ice Plaid Boardshorts Swim Surf Trunks Pocket Logo Spellout
      Volcom Boys 12 Blue Ice Plaid Boardshorts Swim Surf Trunks Pocket Logo Spellout
      Opens in a new window or tab
      Pre-Owned
      $20.00
      or Best Offer
      +$7.35 delivery
      Free returns
      Sponsored
      Top Rated Plus
    • 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
      Brand New
      $24.95
      or Best Offer
      +$6.95 delivery
      Sponsored
    •  NwT Oneill Boy's Performance 50+ SPF  Color. WHITE Shirt Size  12 Logo Slim fit
      NwT Oneill Boy's Performance 50+ SPF Color. WHITE Shirt Size 12 Logo Slim fit
      Opens in a new window or tab
      Brand New
      $18.99
      Buy It Now
      +$6.35 delivery
      Extra 20% off with coupon
      Sponsored
    • SPEEDO Boy’s Swimsuit Jammer Solid Black Size 12 NEW With Tags Competitive
      SPEEDO Boy’s Swimsuit Jammer Solid Black Size 12 NEW With Tags Competitive
      Opens in a new window or tab
      Brand New
      5.0 out of 5 stars.
      (1)1 product rating - SPEEDO Boy’s Swimsuit Jammer Solid Black Size 12 NEW With Tags Competitive
      $21.99
      or Best Offer
      +$3.99 delivery
      Sponsored
    • abercrombie fitch Kids Boys M Swim Trunks Board Shorts
      abercrombie fitch Kids Boys M Swim Trunks Board Shorts
      Opens in a new window or tab
      Pre-Owned
      $9.25
      or Best Offer
      +$7.55 delivery
      Sponsored
    • BOY’S JOHNNIE-O Boys SWIM TRUNKS Shorts - SIZE 12 *****READ*** Blue
      BOY’S JOHNNIE-O Boys SWIM TRUNKS Shorts - SIZE 12 *****READ*** Blue
      Opens in a new window or tab
      Pre-Owned
      $22.99
      Buy It Now
      Free 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
      5.0 out of 5 stars.
      (1)1 product rating - Speedo Boy's Training Swim Jammer - 2025
      $29.50
      Buy It Now
      +$14.25 delivery
      Sponsored
    • NWT O’Neill Boy's Sz 12 Ash & Silver UV 5oz Logo 1/2 Sleeve Rashguard Swim Shirt
      NWT O’Neill Boy's Sz 12 Ash & Silver UV 5oz Logo 1/2 Sleeve Rashguard Swim Shirt
      Opens in a new window or tab
      Brand New
      $7.00
      Was: $14.0050% off
      or Best Offer
      +$7.95 delivery
      Sponsored
    • Arena Boys Logo Graphic Swim Jammer - Blue River/Water
      Arena Boys Logo Graphic Swim Jammer - Blue River/Water
      Opens in a new window or tab
      Brand New
      $35.99
      Buy It Now
      +$19.99 delivery
      from United Kingdom
      Sponsored
    • Nautica Swim Shorts Boys Size Medium 10/12
      Nautica Swim Shorts Boys Size Medium 10/12
      Opens in a new window or tab
      Pre-Owned
      $9.95
      Buy It Now
      +$4.71 delivery
      Sponsored
    • CHAMPION Boys Swim Trunks Shorts Size Large (11-12) Blue
      CHAMPION Boys Swim Trunks Shorts Size Large (11-12) Blue
      Opens in a new window or tab
      Pre-Owned
      $7.00
      or Best Offer
      +$4.14 delivery
      Sponsored
    • Hype Boys Blue Pool Fade Script Logo Swim Shorts
      Hype Boys Blue Pool Fade Script Logo Swim Shorts
      Opens in a new window or tab
      Brand New
      $8.98
      Was: $9.455% off
      Buy It Now
      +$3.95 delivery
      Sponsored
    • Kanu Surf Boys Girl Long-Sleeve Platinum UPF 50+ Rash guard  AQUA Size 12
      Kanu Surf Boys Girl Long-Sleeve Platinum UPF 50+ Rash guard AQUA Size 12
      Opens in a new window or tab
      Brand New
      $22.49
      Was: $29.9925% off
      Buy It Now
      +$7.00 delivery
      Sponsored
    • Boardies Apparel Kids Boy's White Logo Rash Guard Swimwear Size 12
      Boardies Apparel Kids Boy's White Logo Rash Guard Swimwear Size 12
      Opens in a new window or tab
      Brand New
      $17.48
      Was: $49.9565% off
      or Best Offer
      +$9.99 delivery in 2-4 days
      Extra 5% off with coupon
      Sponsored
    • THE ENDLESS SUMMER Boy's Logo Drawstring Swim Shorts Teal 12
      THE ENDLESS SUMMER Boy's Logo Drawstring Swim Shorts Teal 12
      Opens in a new window or tab
      Brand New
      $34.99
      Buy It Now
      Free delivery
      Sponsored
    • Batman Boy’s Action Figure Graphic Logo Beach Wear Swim Shorts Size 10/12
      Batman Boy’s Action Figure Graphic Logo Beach Wear Swim Shorts Size 10/12
      Opens in a new window or tab
      Pre-Owned
      $14.99
      Buy It Now
      +$4.84 delivery
      Sponsored
    • The North Face Boys Swim Trunks Shorts sz medium 12
      The North Face Boys Swim Trunks Shorts sz medium 12
      Opens in a new window or tab
      Pre-Owned
      $17.00
      Buy It Now
      +$5.00 delivery
      Sponsored
    • Jurassic World Green Logo Swim Shorts Boys
      Jurassic World Green Logo Swim Shorts Boys
      Opens in a new window or tab
      Brand New
      $24.95
      Buy It Now
      +$6.95 delivery
      from United Kingdom
      Sponsored
    • Speedo Junior Boys Solid Black Jammer Swim Short size 12 NEW WITH TAGS SHIP ASAP
      Speedo Junior Boys Solid Black Jammer Swim Short size 12 NEW WITH TAGS SHIP ASAP
      Opens in a new window or tab
      Brand New
      5.0 out of 5 stars.
      (1)1 product rating - Speedo Junior Boys Solid Black Jammer Swim Short size 12 NEW WITH TAGS SHIP ASAP
      $16.97
      or Best Offer
      +$8.81 delivery
      Sponsored
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