1,700+ results
- Boys Secret Wishes Smocked Swim Trunks Size 4Opens in a new window or tabPre-Owned$8.00Was: $10.0020% offor Best Offer+$5.00 delivery
- BIRDWELL BEACH BRITCHES BOYS BOARDSHORTS YOUTH KIDS TODDLER SIZE 4Opens in a new window or tabPre-Owned$40.00Buy It NowFree delivery
- Disney Star Wars: The Last Jedi Swim Trunks for BoysOpens in a new window or tabNew (Other)$12.99Buy It NowFree delivery
- NWT AUTHENTIC VILEBREQUIN SWIM TRUNKS - WATER REACTIVE - KIDS- BLUE - 4 YEARSOpens in a new window or tabBrand New$65.00or Best Offer+$5.95 deliveryFree returns
- Ruffle Butts Rugged Butts Floral Swim Trunks Boys Size 4T NWT Red BlueOpens in a new window or tabBrand New$19.99or Best Offer+$5.51 delivery
- Volcom Little Boys Size 4 2 Pc L/S Olive Green Rash Guard + Swim Shorts BlackOpens in a new window or tabBrand New$21.00or Best OfferFree deliveryLast one
- Rip Curl Little Boys 4 Swim Swimsuit Surf Toddler Blue Kids Zip Up 4t SwimmingOpens in a new window or tabPre-Owned$14.95or Best Offer+$5.99 delivery
- NEW Disney Boys Star Wars The Mandalorian Grey Heather Jogger 4TOpens in a new window or tabNew (Other)$14.95or Best OfferFree delivery
Picked For You
Top selling items from trusted sellers | Sponsored- BIRDWELL BEACH BRITCHES BOYS BOARDSHORTS YOUTH KIDS TODDLER SIZE 4Opens in a new window or tab$40.00afamilyaffair7 (5,232) 100%
- Binki Bro Harada Swimsuit In Blue Little Boys Size 4T, Brand NewOpens in a new window or tab$29.00baldwinsloft (3,867) 99.3%Last one
- Sundek Swin Trunk Boy's Green Rainbow Size 4Opens in a new window or tab$61.00stores4family (1,069) 100%
- Minecraft Black and Green UPF 50+ Sun Shirt Boys Size 4TOpens in a new window or tab$14.95titan27279 (6,088) 99.8%
- NEW Disney Boys Star Wars The Mandalorian Grey Heather Jogger 4TOpens in a new window or tab$14.95titan27279 (6,088) 99.8%
- Boys Hurley American Flag swim Board Shorts, Size 4 adjustable waistOpens in a new window or tab$16.99rumblemyjumble (1,451) 99.5%
- Tommy Bahama Boys 3 Piece Swim Set (Shark, Size 4T) NWTOpens in a new window or tab$32.11gcsservices (22,437) 99.2%
- Kids Swimwear Surfing Swimsuit Bathing Suit Rash Guard UPF 50+ Two Piece BeachOpens in a new window or tab$13.80clearcalling104 (2,241) 99.5%
- Patagonia Boys 4 4T Baby Baggie Shorts Orange Green BlueOpens in a new window or tabPre-Owned$20.00or Best Offer+$5.00 delivery
- 💕1 Vilebrequin Boy Swim Trunks YOUR CHOICE: Turtle Elephants Bear Travel 4 & 2Opens in a new window or tabPre-Owned$26.91Was: $29.9010% offBuy It Now+$6.90 delivery
- Binki Bro Harada Swimsuit In Blue Little Boys Size 4T, Brand NewOpens in a new window or tabBrand New$29.00or Best OfferFree deliveryFree returnsLast oneTop Rated Plus
- Bilo Baby Kid Boys Chic Animals Printed One-Piece Rash Guard Sun Hat SwimsuitOpens in a new window or tabBrand New$6.99Buy It NowFree deliverySave up to 50% when you buy more
- NWT AUTHENTIC VILEBREQUIN SWIM TRUNKS - WATER REACTIVE SEAHORSE - KIDS - 4 YEARSOpens in a new window or tabBrand New$65.00or Best Offer+$5.95 deliveryFree returns
- Boy's Crown & Ivy Sailboat Bathing Suit Swim Trunks Size 4TOpens in a new window or tabPre-Owned$12.00or Best Offer+$4.84 deliveryExtra 10% off with coupon
- NEW WITH TAGS AUTHENTIC VILEBREQUIN SWIM TRUNKS FOR KIDS - YELLOW - 4 YEARSOpens in a new window or tabBrand New$65.00or Best Offer+$5.95 deliveryFree returns
- Psycho Bunny Maybrook Bunny Print Little Boy 4 XXXSOpens in a new window or tabPre-Owned$17.99or Best Offer+$6.50 deliveryFree returnsTop Rated Plus
- NEW Hurley sz 4 neon peach orange boys youth swim board shorts swimsuit trunkOpens in a new window or tabBrand New$15.88Buy It Now+$5.99 delivery
- NWT Gymboree Boy July 4th American Flag Star Swim trunk shorts Many sizesOpens in a new window or tabBrand New$14.98Was: $16.6510% offBuy It Now+$3.99 delivery7+ sold
- NWT Under Armour swim set size 4 5 7Opens in a new window or tabBrand New$31.00Buy It NowFree delivery
- Tommy Bahama Boys 3pc Swim Set OctopusOpens in a new window or tabBrand New$28.99Buy It NowFree delivery in 4 days
From our popular brands
Based on number of views and purchases | Sponsored- DisneyDisney Star Wars: The Last Jedi Swim Trunks for BoysOpens in a new window or tabNew (Other)$12.99Free delivery
- VilebrequinNWT AUTHENTIC VILEBREQUIN SWIM TRUNKS - WATER REACTIVE - KIDS- BLUE - 4 YEARSOpens in a new window or tabBrand New$65.00+$5.95 delivery
- VilebrequinNWT AUTHENTIC VILEBREQUIN SWIM TRUNKS - WATER REACTIVE SEAHORSE - KIDS - 4 YEARSOpens in a new window or tabBrand New$65.00+$5.95 delivery
- DisneyDisney Cars Team Blue Swim Suit Trunks Shorts Boys Size 4 / 5Opens in a new window or tabPre-Owned$7.50+$4.71 delivery
- HurleyBoys Hurley American Flag swim Board Shorts, Size 4 adjustable waistOpens in a new window or tabPre-Owned$16.99Free delivery
- HurleyHurley boys board shorts Swim Trunks Size 4 blue Kids YouthOpens in a new window or tabPre-Owned$4.79+$6.00 deliveryExtra 20% off with coupon
- MarvelBoys Bathing Suits Superhero 3-pack Size 4Opens in a new window or tabPre-Owned$9.00+$6.55 delivery
- ArtArt Class Boys Black Swimming Trunk Short Size 4Opens in a new window or tabBrand New$7.99Free delivery
- Spider-Man Swinging Action Youth Swim Shorts & Rash Guard Set Multi-ColorOpens in a new window or tabBrand New$19.99Buy It NowFree delivery
- Minecraft Black and Green UPF 50+ Sun Shirt Boys Size 4TOpens in a new window or tabBrand New$14.95or Best OfferFree delivery
- Boys Hurley American Flag swim Board Shorts, Size 4 adjustable waistOpens in a new window or tabPre-Owned$16.99or Best OfferFree deliveryFree returns
- Billabong x Dr. Seuss Lorax Boys Size S / 4 yrs Swim Trunks Board Shorts KidsOpens in a new window or tabPre-Owned$14.50Buy It Now+$4.60 delivery
- New Carter's Crab Swim trunk Shorts Orange UPF 50+Opens in a new window or tabBrand New$12.95Was: $14.3910% offBuy It NowFree delivery1+ watchers
- Disney Pixar Finding Nemo Boy's Bathing Swimming Swim Suit Trunks New Size 4Opens in a new window or tabBrand New$14.99or Best Offer+$4.99 deliveryFree returnsTop Rated Plus
- Kids Boys Beachwear 2 Pieces Rash Guard Wetsuit Swimsuit Athletic Swimwear SetsOpens in a new window or tabNew (Other)$10.32 to $19.46Was: $18.267% offBuy It NowFree deliveryfrom China
- Kids Boys Swimwear Summer Rash Guard Outfits Swimsuit Diving Beachwear PartyOpens in a new window or tabNew (Other)$10.92 to $23.57Buy It NowFree deliveryfrom China
- Sundek Swin Trunk Boy's Green Rainbow Size 4Opens in a new window or tabBrand New$61.00or Best OfferFree delivery
- Place Sport Boys 4T Swim TrunksOpens in a new window or tabPre-Owned$8.00or Best Offer+$4.84 delivery
- HURLEY BOYS BOARD SHORTS SWIM SHORT SZ 4-7 YOU PICK SIZE / COLOR $35-40 CLOSEOUTOpens in a new window or tabBrand New$14.99Buy It Now+$3.00 delivery
- New! Hanna Andersson Boys Rash Guard Swim Top Lot of 2 Size 100 (US 4)Opens in a new window or tabBrand New$19.99Buy It Now+$6.55 delivery
- New! Hanna Andersson Boys Rash Guard Swim Top Lot of 2 Size 100 (US 4)Opens in a new window or tabBrand New$19.99Buy It Now+$6.55 delivery
- Despicable Me Minion Rash Guard Swim Shirt Built In UPF Protection Size 4TOpens in a new window or tabBrand New$3.57Was: $3.9710% offBuy It Now+$5.65 delivery
- Miles The Label Boys “ Sun’s Out Surf’s Up “ Swim Set 4 YOOpens in a new window or tabPre-Owned$29.00Buy It Now+$6.55 delivery
- SPONGEBOB & PATRICK UPF-50+ Swim Trunks Bathing Suit NWT Boys 4, 5-6 or 7 $25Opens in a new window or tabBrand New$14.39Was: $15.9910% offBuy It Now+$4.95 delivery in 2-4 daysFree returnsSave up to 20% when you buy moreTop Rated Plus
- 4t Boys Swim Lot 7- 5 Shirts And 2 Trunks Well UsedOpens in a new window or tabPre-Owned$19.99or Best Offer+$9.45 delivery
- Body Glove Boys Size 4 Swim Shirt & ShortsOpens in a new window or tabPre-Owned$10.00or Best Offer+$5.00 delivery
- New w Tags Sesame Street Cookie Monster Swim Trunks Boys 4T Vintage Bathing SuitOpens in a new window or tabBrand New$40.00or Best Offer+$5.26 delivery14 watchers
- Polo Ralph Lauren Boy's Polo Bear Swim Trunks Scuba 4 $69.50Opens in a new window or tabBrand New$47.99Buy It Now+$5.62 delivery
- Beaufort Bonnet Dear Santa Tortola Trunks Boys Childrens Size 4tOpens in a new window or tabBrand New$24.99Buy It Now+$4.84 delivery
- NEW Art Class Target Black W/ Grey Stripes Swim Suit Bottoms Shorts Boys size 4Opens in a new window or tabBrand New$14.99Buy It NowFree delivery
- John Deere Swim Trunks Shorts Size 4T | NWT | Construction Bulldozer LoaderOpens in a new window or tabBrand New$12.99or Best Offer+$4.84 delivery
- Boys Pokemon Pikachu 2 Pc Rash Guard Shirt Swim Trunks Shorts Set Outfit 4 or 7Opens in a new window or tabBrand New$22.79Was: $23.995% offBuy It Now+$5.50 deliveryFree returnsTop Rated Plus
- Boys Size 4/5 Member’s Mark Shark Swim Trunks - Very Good Used ConditionOpens in a new window or tabPre-Owned$8.00Buy It Now+$6.00 delivery
- Candlesticks Boy’s Swimwear Trunks 4TOpens in a new window or tabPre-Owned$9.95or Best OfferFree delivery
- Minnow Boys Swim Size 3T-4T Swimsuit Purple, Blue And White PlaidOpens in a new window or tabPre-Owned$20.00Buy It Now+$6.55 delivery
- Burberry Children Check Plaid Red Boys Swim Trunks Swimwear Shorts SZ 4Y | 104cmOpens in a new window or tabPre-Owned$38.77or Best Offer+$7.25 delivery
- Crew Cuts SIZE 4 Blue Aqua Turtle Boy's Swim TrunksOpens in a new window or tabPre-Owned$14.00Buy It Now+$7.97 deliveryFree returns
- SONIC the HEDGEHOG SEGA UPF-50 Swim Trunks Bathing Suit NWT Boys Sz. 4, 5-6 or 7Opens in a new window or tabBrand New$14.39Was: $15.9910% offBuy It Now+$4.95 delivery in 2-4 daysFree returnsSave up to 20% when you buy moreTop Rated Plus
- Lego Ninjago Chima Boys Swim Shorts & Goggles-Size 4Opens in a new window or tabBrand New$18.95Buy It NowFree delivery
- HURLEY BOY'S SWIM TRUNK, AURORA GREEN CHECK FOR SIZE BinO03Opens in a new window or tabBrand New$9.99Buy It Now+$6.40 deliverySave up to 10% when you buy more
- Vineyard Vines Boys Poolside Blue Printed Chappy Swim ShortsOpens in a new window or tabBrand New$34.99 to $39.99Buy It Now+$6.84 delivery2+ watchers
- Quiksilver Little Boy's Highline Hawaii Hawaiian Flag Board Shorts Blue 4/5/6Opens in a new window or tabBrand New$26.00Buy It NowFree delivery3+ watchers
- Little English Boys Swim Trunks 4TOpens in a new window or tabBrand New$5.190 bids · Time left4d 10h$13.24Buy It Now+$4.51 delivery
- Lot of (3) Boys Swim Trunks Size 4, Vineyard Vines, Hanna AndersonOpens in a new window or tabPre-Owned$35.00or Best Offer+$12.71 delivery
- Sovereign Code Little Boys Board Swim Shorts Trunks 4/5/6 Kona Black HawaiianOpens in a new window or tabBrand New$13.90Buy It NowFree delivery
- Disney Collection Mickey Mouse Swim Trunks Shorts Boy Size 4Opens in a new window or tabPre-Owned$29.99Buy It NowFree delivery
- Vineyard Vines Boys Moonshine Blue Printed Chappy Swim ShortsOpens in a new window or tabBrand New$34.99Buy It Now+$6.84 delivery
- Disney Store Boy's Stitch Swim Trunks Swimwear BlueOpens in a new window or tabBrand New$34.95Buy It Now+$7.35 delivery
- Disney Mickey Mouse Swim Trunks Shorts Boy Size 4Opens in a new window or tabPre-Owned$18.99Buy It NowFree delivery
- Matilda Jane Boys Size 4 Swim Trunks Shorts Lemon Print Mesh Brief Pool BeachOpens in a new window or tabPre-Owned$8.96Was: $9.9510% offBuy It NowFree deliveryExtra 5% off with coupon
- NWT Gymboree Boy Swim trunk shorts Palm Leaf UPF 50+ Swimsuit Size 4,5-6,7-8,14Opens in a new window or tabBrand New$16.87Was: $18.7510% offBuy It NowFree delivery
- Wild About Me Blanks Boutique Boys Size 4T Seersucker Swim Trunks Lot Of 2Opens in a new window or tabPre-Owned$3.990 bids · Time left5d 21hor Best Offer+$4.71 delivery
- Star Wars 4T boys Mandalorian Toddler Swim Trunks and Rashguard Set new tagsOpens in a new window or tabBrand New$27.30Was: $39.0030% offBuy It Now+$5.00 delivery
- Munster Boy's Swirl Board Shorts Black SwirlOpens in a new window or tabBrand New$29.99Buy It NowFree delivery
- Under Armour Little Boys Blue Red White Swim Trunks Patriotic NEWOpens in a new window or tabBrand New$18.99Buy It Now+$6.55 delivery
- Boys Sol Swim $18 Assorted Swim Trunks Sizes 4, 5, 6 & 7Opens in a new window or tabBrand New$12.00Buy It NowFree deliveryFree returns
- Bruno Swim Trunks for Kids – Encanto - Size 4 5/6 7/8Opens in a new window or tabBrand New$21.21Was: $24.9515% offBuy It NowFree delivery in 2-4 daysFree returnsTop Rated Plus
- St. Eve Boys Swim Beach Coverup with Hood Pirate WhiteOpens in a new window or tabBrand New$24.99Buy It NowFree delivery
- billabong dr seuss Shorts Boys 4/S Black Swim Pool Summer BeachOpens in a new window or tabPre-Owned$20.00or Best Offer+$5.50 deliveryFree returnsExtra 22% off with couponTop Rated Plus
- Zeroxposur Boys Swim Trucks Shorts Rash Guard Top Marine Size 4 Small NEWOpens in a new window or tabBrand New$17.97Was: $29.9540% offor Best Offer+$7.99 delivery
- Items Per Page
