Skip to main content
Hi !Hi! Sign in or registerDaily DealsBrand OutletGift CardsHelp & Contact
Sell
Watchlist
My eBay
  • Summary
  • Recently Viewed
  • Bids/Offers
  • Watchlist
  • Purchase History
  • Buy Again
  • Selling
  • Saved Feed
  • Saved Searches
  • Saved Sellers
  • My Garage
  • Sizes
  • My Collection
  • Messages
  • PSA Vault
Please sign-in to view notifications.
Loading...
eBay Home
Advanced
Sponsored
Sponsored
Sponsored

Filter

    • Category

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

        XSSMLXL4Filter Applied56781010-12121416
      • Material

        • Nylon (42) Items (42)
          Filter Applied
        • Polyester (351) Items (351)
        • 100% Polyester (282) Items (282)
        • Spandex (89) Items (89)
        • Spandex Blend (17) Items (17)
        • Cotton (14) Items (14)
        • Cotton Blend (9) Items (9)
        • 100% Cotton (8) Items (8)
      • Brand

        • Speedo (6) Items (6)
        • Hanna Andersson (5) Items (5)
        • Polo Ralph Lauren (3) Items (3)
        • Hurley (1) Items (1)
        • Under armour (1) Items (1)
        • Gymboree (2) Items (2)
        • Lands' End (2) Items (2)
        • Disney (1) Items (1)
      • Color

        • Beige
        • Black
        • Blue
        • Green
        • Ivory
        • Multicolor
        • Orange
        • Red
        • White
      • Swim Bottom Style

        • Trunks (12) Items (12)
        • Board Shorts (4) Items (4)
        • Swim Shorts (7) Items (7)
        • Jammer (5) Items (5)
        • Not Specified (16) Items (16)
      • Type

        • Rash Guard (15) Items (15)
        • Bottom (19) Items (19)
        • Top (9) Items (9)
        • Wetsuit (1) Items (1)
        • One Piece (1) Items (1)
        • Not Specified (3) Items (3)
      • Features

        • Drawstring (8) Items (8)
        • Lined (7) Items (7)
        • Comfortable Fit (6) Items (6)
        • Elastic Waist (6) Items (6)
        • Lightweight (6) Items (6)
        • Short Sleeve (6) Items (6)
        • Back Pocket (5) Items (5)
        • Pockets (5) Items (5)
      • Theme

        • Beach (7) Items (7)
        • Classic (4) Items (4)
        • Colorful (4) Items (4)
        • Sports (4) Items (4)
        • Logo (3) Items (3)
        • Outdoor (3) Items (3)
        • Shark (3) Items (3)
        • Tropical (3) Items (3)
      • Department

        • Boys (40) Items (40)
        • Unisex Kids (3) Items (3)
      • Character

        • Boy (34) Items (34)
        • Blue (4) Items (4)
        • Not Specified (8) Items (8)
    • Price

      • Under $13.00
      • $13.00 to $19.00
      • Over $19.00
      $
      to
      $
      Please provide a valid price range
      Available inventory
      $0
      $1000+
    • Condition

      • New with tags (17) Items (17)
      • New without tags (2) Items (2)
      • Pre-Owned (23) Items (23)
    • Buying Format

    • Item Location

      • Within25 mi
    • Shipping and pickup

      • Arrives in 2-4 days
      • Free Shipping
      • Local Pickup within25 miles
    • Show only

      • Free Returns
      • Returns Accepted
      • Authorized Seller
      • Completed Items
      • Sold Items
      • Deals & Savings
      • Authenticity Guarantee

42 results

  • All
  • Auction
  • Buy It Now
  • Accepts Offers
  • All Listings
  • Auction
  • Buy It Now
  • Accepts Offers- Filter Applied
  • Any Condition- Filter Applied
  • New with tags
  • New without tags
  • Pre-Owned
  • Arrives in 2-4 days
  • Free Shipping
  • Best Match
  • Time: ending soonest
  • Time: newly listed
  • Price + Shipping: lowest first
  • Price + Shipping: highest first
  • Distance: nearest first
  • List View
  • Shop on eBay
    Shop on eBay
    Opens in a new window or tab
    Brand New
    $20.00
    or Best Offer
    Sponsored
  • Shop on eBay
    Shop on eBay
    Opens in a new window or tab
    Brand New
    $20.00
    or Best Offer
    Sponsored
    • Size: 4Remove filter
    • NylonRemove filter
    • Clear AllFilters
    • Polo Ralph Lauren Polo Bear Performance Rash Guard Little Boy's 4 Multicolor L/S
      Polo Ralph Lauren Polo Bear Performance Rash Guard Little Boy's 4 Multicolor L/S
      Opens in a new window or tab
      Brand New
      $18.98
      Was: $22.3315% off
      or Best Offer
      +$5.95 delivery
      Free returns
      Sponsored
      Top Rated Plus
    • Polo By Ralph Lauren Kids Boys Adjustable Elastic Waist Lined Swim Trunks Sz 4
      Polo By Ralph Lauren Kids Boys Adjustable Elastic Waist Lined Swim Trunks Sz 4
      Opens in a new window or tab
      Pre-Owned
      $27.99
      or Best Offer
      Free delivery
      Free returns
      Sponsored
    • Ron Jon Kids Black Rash Guard Size 4 with Skulls on Sleeves
      Ron Jon Kids Black Rash Guard Size 4 with Skulls on Sleeves
      Opens in a new window or tab
      Pre-Owned
      $14.95
      or Best Offer
      +$6.55 delivery
      Sponsored
    • Polo Ralph Lauren Swim Trunks Boys Size 4 Plaid Liner Board Shorts Lined
      Polo Ralph Lauren Swim Trunks Boys Size 4 Plaid Liner Board Shorts Lined
      Opens in a new window or tab
      Pre-Owned
      $14.95
      or Best Offer
      +$6.95 delivery in 2-4 days
      Free returns
      Sponsored
      Top Rated Plus
    • Burberry Children Check Plaid Red Boys Swim Trunks Swimwear Shorts SZ 4Y | 104cm
      Burberry Children Check Plaid Red Boys Swim Trunks Swimwear Shorts SZ 4Y | 104cm
      Opens in a new window or tab
      Pre-Owned
      $38.77
      or Best Offer
      +$7.25 delivery
      Sponsored
    • New w Tags Sesame Street Cookie Monster Swim Trunks Boys 2T Vintage Bathing Suit
      New w Tags Sesame Street Cookie Monster Swim Trunks Boys 2T Vintage Bathing Suit
      Opens in a new window or tab
      Brand New
      $40.00
      or Best Offer
      +$5.26 delivery
      10 watchers
      Sponsored
    • Vintage Pokemon Shorts 4 Blue Poliwhirl Bulbasaur Psyduck Swim Trunks 90s Y2K
      Vintage Pokemon Shorts 4 Blue Poliwhirl Bulbasaur Psyduck Swim Trunks 90s Y2K
      Opens in a new window or tab
      Pre-Owned
      $4.99
      or Best Offer
      +$5.80 delivery
      Free returns
      Sponsored
    • Speedo Boys Learn to Swim Jammer Trunks UPF +50 Black Size 4 NWT FREE SHIP
      Speedo Boys Learn to Swim Jammer Trunks UPF +50 Black Size 4 NWT FREE SHIP
      Opens in a new window or tab
      Brand New
      $14.50
      or Best Offer
      Free delivery
      Sponsored
    • Lands’ End Boys Short Sleeve Navy Striped Rash Guard Size YS 4T EUC SPF
      Lands’ End Boys Short Sleeve Navy Striped Rash Guard Size YS 4T EUC SPF
      Opens in a new window or tab
      Pre-Owned
      $6.99
      or Best Offer
      +$5.99 delivery
      Sponsored
    • Lilly Pulitzer Boys Kids Swim Trunks Shorts Bathing Suit Sz 4 Lined *Faded*
      Lilly Pulitzer Boys Kids Swim Trunks Shorts Bathing Suit Sz 4 Lined *Faded*
      Opens in a new window or tab
      Pre-Owned
      $10.00
      or Best Offer
      +$4.84 delivery
      Sponsored
    • Hanna Andersson Boys Striped Raglan Swim Shirt Size 100 Red/White/Blue
      Hanna Andersson Boys Striped Raglan Swim Shirt Size 100 Red/White/Blue
      Opens in a new window or tab
      Pre-Owned
      $14.99
      or Best Offer
      +$8.45 delivery
      Free returns
      Sponsored
      Top Rated Plus
    • LL Bean Sun Shirt Kids 4 Blue Yellow Long Sleeve Swim Surf Protection Rash Guard
      LL Bean Sun Shirt Kids 4 Blue Yellow Long Sleeve Swim Surf Protection Rash Guard
      Opens in a new window or tab
      Brand New
      $8.08
      Was: $10.7725% off
      or Best Offer
      +$4.84 delivery
      Free returns
      Sponsored
      Top Rated Plus
    • VOLCOM Boy Lido Short Sleeve Rash Guard Toddler Youth Surf Anti UV UPF 50 4T S
      VOLCOM Boy Lido Short Sleeve Rash Guard Toddler Youth Surf Anti UV UPF 50 4T S
      Opens in a new window or tab
      Pre-Owned
      $15.99
      or Best Offer
      +$4.50 delivery in 2-4 days
      Sponsored
    • Speedo, Boy’s Swimsuit Jammer Black Swimwear, Youth Size 4
      Speedo, Boy’s Swimsuit Jammer Black Swimwear, Youth Size 4
      Opens in a new window or tab
      New (Other)
      $19.43
      or Best Offer
      +$5.85 delivery
      Sponsored
    • Hanna Andersson Rash Guard Swim Shirt Boys Size 4 100 Red
      Hanna Andersson Rash Guard Swim Shirt Boys Size 4 100 Red
      Opens in a new window or tab
      Pre-Owned
      $8.99
      Was: $9.9910% off
      or Best Offer
      +$6.95 delivery
      Free returns
      Sponsored
      Top Rated Plus
    • Kanu Surf Boy’s UPF 50 Rashguard Short Sleeve Swim Shirt Size 4T, Blue
      Kanu Surf Boy’s UPF 50 Rashguard Short Sleeve Swim Shirt Size 4T, Blue
      Opens in a new window or tab
      Brand New
      $21.91
      or Best Offer
      +$5.85 delivery
      Sponsored
    • Sand N Sun 2PC Swimwear Set Boys Size 4T Swim Shirt & Lined Board Shorts Sharks
      Sand N Sun 2PC Swimwear Set Boys Size 4T Swim Shirt & Lined Board Shorts Sharks
      Opens in a new window or tab
      Pre-Owned
      $15.98
      or Best Offer
      +$7.57 delivery
      Sponsored
    • Speedo Boys Youth Size 8 Learn To Swim Jammer Deep Water Blue 7475114 Trunks
      Speedo Boys Youth Size 8 Learn To Swim Jammer Deep Water Blue 7475114 Trunks
      Opens in a new window or tab
      Brand New
      $22.00
      or Best Offer
      Free delivery
      Sponsored
    • Speedo Boy's Swimsuit Jammer Begin to Swim Solid, Size 4, Black
      Speedo Boy's Swimsuit Jammer Begin to Swim Solid, Size 4, Black
      Opens in a new window or tab
      Brand New
      $10.00
      or Best Offer
      +$4.84 delivery
      Sponsored
    • New $192 Speedo Boys Black Stretch Mid-Rise One-Piece Active Swim Jammer Size 4
      New $192 Speedo Boys Black Stretch Mid-Rise One-Piece Active Swim Jammer Size 4
      Opens in a new window or tab
      Brand New
      $6.98
      Was: $19.9565% off
      or Best Offer
      +$6.79 delivery in 2-4 days
      Extra 6% off with coupon
      Sponsored
    • Tropical Escape Boys Size 4 Swim Trunks Shorts 2 Side Pockets Blue/White Elastic
      Tropical Escape Boys Size 4 Swim Trunks Shorts 2 Side Pockets Blue/White Elastic
      Opens in a new window or tab
      Pre-Owned
      $8.00
      or Best Offer
      +$6.55 delivery
      Sponsored
    • Hanna Andersson Striped Rash Guard Shirt
      Hanna Andersson Striped Rash Guard Shirt
      Opens in a new window or tab
      Pre-Owned
      $11.99
      or Best Offer
      +$4.14 delivery
      Sponsored
    • New Kids Swimsuit Girls Bathers Swimming Bikini Top Trunk Frozen Paw Patrol Au
      New Kids Swimsuit Girls Bathers Swimming Bikini Top Trunk Frozen Paw Patrol Au
      Opens in a new window or tab
      Brand New
      $11.50
      or Best Offer
      +$4.84 delivery
      Sponsored
    • NWOT Boys 4 Gymboree TIKI CHIEF Orange pattern BOARD SWIM TRUNKS SHORTS elastic
      NWOT Boys 4 Gymboree TIKI CHIEF Orange pattern BOARD SWIM TRUNKS SHORTS elastic
      Opens in a new window or tab
      Brand New
      $10.80
      or Best Offer
      +$5.00 delivery
      Sponsored
    • NWOT Boys 4 Gymboree “SKULL & CROSSBONES” UPF 50+ SWIMWEAR RASH GUARD TOP Black
      NWOT Boys 4 Gymboree “SKULL & CROSSBONES” UPF 50+ SWIMWEAR RASH GUARD TOP Black
      Opens in a new window or tab
      New (Other)
      $14.99
      or Best Offer
      +$4.44 delivery
      Sponsored
    • EUC Vintage Summer Boy Swim Bathing Trunks & Mickey Mouse Rashguard, 4T
      EUC Vintage Summer Boy Swim Bathing Trunks & Mickey Mouse Rashguard, 4T
      Opens in a new window or tab
      Pre-Owned
      $8.99
      or Best Offer
      +$5.29 delivery
      Sponsored
    • Wonderkids Boys 4T Colorblock Swim Shorts Green Blue
      Wonderkids Boys 4T Colorblock Swim Shorts Green Blue
      Opens in a new window or tab
      Brand New
      $9.00
      or Best Offer
      +$7.80 delivery
      Sponsored
    • $90 The Animals Observatory Boy's Beige Stripe Print Nylon Swim Shorts Size 4Y
      $90 The Animals Observatory Boy's Beige Stripe Print Nylon Swim Shorts Size 4Y
      Opens in a new window or tab
      Brand New
      $25.53
      Was: $72.9565% off
      or Best Offer
      +$9.99 delivery in 2-4 days
      Sponsored
    • NEW Boys Havacoa Hawaiin Flower Print Board Shorts SWIMSUIT O-4/6 Sz 4 RTL $75
      NEW Boys Havacoa Hawaiin Flower Print Board Shorts SWIMSUIT O-4/6 Sz 4 RTL $75
      Opens in a new window or tab
      Brand New
      $29.95
      or Best Offer
      +$5.00 delivery
      Sponsored
    • Hanna Andersson Black Rash Guard Shirt Size 4
      Hanna Andersson Black Rash Guard Shirt Size 4
      Opens in a new window or tab
      Pre-Owned
      $15.99
      or Best Offer
      +$4.57 delivery
      Sponsored
    • XCEL Kid's UV Shield Rash Guard (Size 4) Excellent UV Protection
      XCEL Kid's UV Shield Rash Guard (Size 4) Excellent UV Protection
      Opens in a new window or tab
      Brand New
      $16.95
      or Best Offer
      Free delivery
      Sponsored
    • City Threads Big Boys' and Girls' SPF50+ Swimming Shorts with Black w/Red (4)
      City Threads Big Boys' and Girls' SPF50+ Swimming Shorts with Black w/Red (4)
      Opens in a new window or tab
      Pre-Owned
      $18.98
      or Best Offer
      +$5.99 delivery in 2-4 days
      Sponsored
    • Lands End Youth Sz L Boys (14) Blue Swim Shirt Youth 4 Short Sleeve Rash Guard
      Lands End Youth Sz L Boys (14) Blue Swim Shirt Youth 4 Short Sleeve Rash Guard
      Opens in a new window or tab
      Pre-Owned
      $14.99
      or Best Offer
      +$6.40 delivery
      Sponsored
    • Boys Hurley Board Shorts  Size 4T Blue
      Boys Hurley Board Shorts Size 4T Blue
      Opens in a new window or tab
      Pre-Owned
      $9.75
      or Best Offer
      +$4.52 delivery
      Sponsored
    • nununu Boys Size 3-4 Years Measuring Band Swim Trunks Mesh Lining
      nununu Boys Size 3-4 Years Measuring Band Swim Trunks Mesh Lining
      Opens in a new window or tab
      Brand New
      $36.95
      or Best Offer
      Free delivery
      Sponsored
    • SPEEDO Boys 22 (Size 4) Orange/Navy Taper Splice Jammer Competitive Swimsuit NEW
      SPEEDO Boys 22 (Size 4) Orange/Navy Taper Splice Jammer Competitive Swimsuit NEW
      Opens in a new window or tab
      Brand New
      $24.99
      or Best Offer
      +$6.40 delivery
      Sponsored
    • Hanna Andersson Rash Swim Shirt Size 100 (4) EUC Orange Navy w/ Octopus Classic!
      Hanna Andersson Rash Swim Shirt Size 100 (4) EUC Orange Navy w/ Octopus Classic!
      Opens in a new window or tab
      Pre-Owned
      $11.99
      or Best Offer
      +$4.50 delivery
      Sponsored
    • Submerge Boys 4 Wet Suit Swimwear One Piece Black Swimsuit Rash Guard Surfing
      Submerge Boys 4 Wet Suit Swimwear One Piece Black Swimsuit Rash Guard Surfing
      Opens in a new window or tab
      Pre-Owned
      $11.24
      Was: $14.9925% off
      or Best Offer
      +$5.95 delivery
      Sponsored
    • Old Navy Boys Size 4T Yellow Blue Caution I Bite Swim Top Shark
      Old Navy Boys Size 4T Yellow Blue Caution I Bite Swim Top Shark
      Opens in a new window or tab
      Pre-Owned
      $7.90
      or Best Offer
      +$5.85 delivery
      Free returns
      Sponsored
    • True Religion Rash Guard UPF 50+ - Royal Blue- Boy's Size 4
      True Religion Rash Guard UPF 50+ - Royal Blue- Boy's Size 4
      Opens in a new window or tab
      Pre-Owned
      $20.00
      or Best Offer
      +$4.71 delivery
      Sponsored
    • Size 4 Boys Under Armor Nylon Swim Shirt Long Sleeve
      Size 4 Boys Under Armor Nylon Swim Shirt Long Sleeve
      Opens in a new window or tab
      Pre-Owned
      $9.00
      or Best Offer
      +$4.84 delivery
      Sponsored
    • New w Tags Sesame Street Cookie Monster Swim Trunks Boys 4T Vintage Bathing Suit
      New w Tags Sesame Street Cookie Monster Swim Trunks Boys 4T Vintage Bathing Suit
      Opens in a new window or tab
      Brand New
      $40.00
      or Best Offer
      +$5.26 delivery
      18 watchers
      Sponsored
    • Tell us what you think- opens in new window or tab

    Copyright © 1995-2025 eBay Inc. All Rights Reserved. Accessibility, User Agreement, Privacy, Consumer Health Data, Payments Terms of Use, Cookies, CA Privacy Notice, Your Privacy Choices and AdChoice