345 results
- Mickey Mouse Boy's 2 Piece UPF+ 50 Long Sleeve Rash Guard and Swim Trunk SetOpens in a new window or tabBrand New$14.00Buy It NowFree deliverySave up to 20% when you buy more
- Polo By Ralph Lauren Kids Boys Adjustable Elastic Waist Lined Swim Trunks Sz 4Opens in a new window or tabPre-Owned$27.99or Best OfferFree deliveryFree returns
- Polo Ralph Lauren Logo Swim Trunks Boys 4/4T Tie-Dye Multi Elastic DrawstringOpens in a new window or tabBrand New$23.90or Best Offer+$5.95 deliveryFree returnsLast oneTop Rated Plus
- Lands' End Swim Trunks Boy's Small 4 Green Orange Floral Hawaiian Board ShortsOpens in a new window or tabPre-Owned$13.95or Best Offer+$6.95 delivery in 2-4 daysFree returnsExtra 10% off with couponTop Rated Plus
- Mickey Mouse Boy's 2 Piece UPF+ 50 Long Sleeve Rash Guard and Swim Trunk SetOpens in a new window or tabBrand New$19.99List price: $30.0033% offBuy It NowFree delivery in 2-4 daysFree returnsSave up to 30% when you buy more
- Sonic the HedgeHog ☆ Boys' Rash Guard and Swim Trunks Set ☆ Sizes 4-10/12Opens in a new window or tabBrand New$29.95Buy It NowFree deliveryFree returns1+ watchers
- The North Face Flash Dry Pull On Multi-Color Swim Trunks Toddler Size 4Opens in a new window or tabNew (Other)$15.00Buy It NowFree delivery
- Member's Mark Boy's 4-Way Stretch Quick Dry Resort Swim TrunkOpens in a new window or tabBrand New$10.99List price: $30.0063% offBuy It NowFree delivery in 2-4 daysFree returnsSave up to 30% when you buy more
Picked For You
Top selling items from trusted sellers | Sponsored- Mickey Mouse Boy's 2 Piece UPF+ 50 Long Sleeve Rash Guard and Swim Trunk SetOpens in a new window or tab$14.00betterthanretail2015 (5,249) 98%Save up to 20% when you buy more
- Polo By Ralph Lauren Kids Boys Adjustable Elastic Waist Lined Swim Trunks Sz 4Opens in a new window or tab$27.99babies_n_things (1,999) 100%
- New! Boy's Hurley Multi Shark Print Swim Trunks Multiple SizesOpens in a new window or tab$29.95rotehale (1,043) 98.8%
- P.S. from Aeropostale Boys Cool Summer Rashguard Swim Set Size 2T 3T 4T 4 5 6 7Opens in a new window or tab$16.09jljoker87 (85,537) 99.3%
- New! Boy's Hurley Multi Stripes Swim Trunks Multiple SizesOpens in a new window or tab$29.95rotehale (1,043) 98.8%
- Body Glove Boys Swimwear Trunks Shorts Multi Colored Size 4Opens in a new window or tab$14.25mjaybell24 (9,369) 99.1%
- Art Class Boys Size 4 Orange/Black Swim Trunks X5ZZK Walking/Swim TrunksOpens in a new window or tab$11.97clearchoicellc (2,247) 100%
- Hurley Little Boys Doodle Tropical Paradise Board Shorts, Size 4Opens in a new window or tab$9.95kdk_kidsclothes (3,103) 100%
- Polo Ralph Lauren TRAVELER SCUBA BEAR SWIM TRUNKS SIZE 4-4T GOODOpens in a new window or tabPre-Owned$29.99Buy It Now+$7.35 delivery
- Minecraft ☆ Boys' Allover Character Swim Trunks ☆Sizes 4/5, 6/7, 8, 10/12, 14/16Opens in a new window or tabBrand New$17.95Buy It NowFree deliveryFree returns
- SONIC the HEDGEHOG SEGA UPF50+ Swim Trunks Bathing Suit Boys Sz. 4, 5-6 or 7 NWTOpens in a new window or tabBrand New$16.99Buy It Now+$4.95 delivery in 2-4 daysFree returnsSave up to 20% when you buy moreTop Rated Plus
- NWOT Polo Ralph Lauren Boys 4 4T Traveler Embroidered All Over Pony Swim TrunkOpens in a new window or tabNew (Other)$22.99or Best Offer+$5.10 deliveryFree returnsTop Rated Plus
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- Polo Ralph Lauren Swim Trunks Boys Size 4 Plaid Liner Board Shorts LinedOpens in a new window or tabPre-Owned$14.95or Best Offer+$6.95 delivery in 2-4 daysFree returnsTop Rated Plus
- Under Armour Kids Swim 2 Piece Set Tee & Trunks Size 4 Graphic Logo UPF 50+Opens in a new window or tabBrand New$23.79Was: $27.9915% offor Best Offer+$4.57 deliveryFree returnsTop Rated Plus
- Mini Boden Boys Swim Shorts With Undersea Print Size 3-4Y Drawstring WaistOpens in a new window or tabPre-Owned$18.00or Best Offer+$8.84 delivery
- Old Navy Boys American Flag Swim Shorts Size 4TOpens in a new window or tabPre-Owned$0.990 bids · Time left4d 23h+$6.35 delivery
- MINECRAFT CREEPER UPF-50+ Bathing Suit Swim Trunks NWT Boys Size 4, 5-6 or 7 $25Opens in a new window or tabBrand New$14.99Was: $24.9840% offBuy It Now+$4.95 delivery in 2-4 daysFree returnsSave up to 20% when you buy moreTop Rated Plus
- Speedo Boys Learn to Swim Jammer Trunks UPF +50 Black Size 4 NWT FREE SHIPOpens in a new window or tabBrand New$14.50or Best OfferFree delivery
- Hurley Boy's UPF50+ Drawstring Waist Pull On Swim ShortOpens in a new window or tabBrand New$14.99List price: $38.0061% offBuy It NowFree delivery in 2-4 daysFree returnsSave up to 30% when you buy more
From our popular brands
Based on number of views and purchases | Sponsored- DisneyMickey Mouse Boy's 2 Piece UPF+ 50 Long Sleeve Rash Guard and Swim Trunk SetOpens in a new window or tabBrand New$14.00Free deliverySave up to 20% when you buy more
- DisneyCARS LIGHTNING McQUEEN UPF-50+ Swim Trunks Bathing Suit NWT Boys 4, 5-6 or 7 $25Opens in a new window or tabBrand New$15.99+$4.95 deliverySave up to 20% when you buy more
- HurleyHurley Board Shorts Boys Sz 4 Swimsuit Surf Trunks Shark Adjustable Waist BlackOpens in a new window or tabPre-Owned$8.99+$5.80 delivery
- HurleyNew! Boy's Hurley Multi Shark Print Swim Trunks Multiple SizesOpens in a new window or tabBrand New$29.95Free delivery
- QuiksilverQuiksilver 3 4 5 6 Surf Swim Shorts Trunks NEW Navy Orange Functional DrawstringOpens in a new window or tabBrand New$18.99+$6.55 delivery
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- ArtArt Class Boys Size 4 Orange/Black Swim Trunks X5ZZK Walking/Swim TrunksOpens in a new window or tabPre-Owned$11.97Free delivery
- GapNWT BabyGap Boys 4 Octopus Coral Reef Shorts Swim Trunks UPF 40 Lined Green BlueOpens in a new window or tabBrand New$20.00+$5.95 delivery
- MarvelMarvel Avengers Age Of Ultron Boys Swim Trunk Shorts Size XS (4)Opens in a new window or tabPre-Owned$10.00+$5.80 delivery
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- Marvel Comics ☆ Boys' Black Panther Rash Guard & Swim Trunks Set ☆ Sizes 4-16Opens in a new window or tabBrand New$29.95Buy It NowFree deliveryFree returns
- LOT OF 4: Hurley Swim Suits - Bathing Suits - Board Shorts - Youth Boys Size 4Opens in a new window or tabPre-Owned$28.50or Best Offer+$7.99 delivery
- Hurley Boy's 4 Way Stretch Quick Dry Back Pocket Swim ShortsOpens in a new window or tabBrand New$14.98List price: $38.0061% offBuy It NowFree delivery in 2-4 daysFree returns
- Lot of 5 Boys sz 4 (1 sz 5) Four shirts one swimtrunk Under Armour, Nike, DisneyOpens in a new window or tabPre-Owned$21.00or Best Offer+$11.81 delivery
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- 2 BOY'S CARTER'S SWIM SHORTS / TRUNKS~SIZE 4 / 5Opens in a new window or tabPre-Owned$7.00Buy It NowFree delivery
- Nautica Boys Swim Shorts Size4TOpens in a new window or tabPre-Owned$0.990 bids · Time left4d 23h+$6.35 delivery
- Sonic the HedgeHog ☆ Boys' Rash Guard and Swim Trunks Set ☆ Sizes 4, 7, 10/12Opens in a new window or tabBrand New$29.95Buy It NowFree deliveryFree returns
- P.S. from Aeropostale Boys Palm Tree Rashguard Swim Set Size 2T 3T 4T 4 5 6 7Opens in a new window or tabBrand New$16.09Was: $22.9930% offBuy It NowFree deliveryFree returns
- Love Brand & Co Boys Classic Swim Trunks 4-6 Years Million Dollar Blue LuxuryOpens in a new window or tabPre-Owned$40.00or Best Offer+$5.62 delivery
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- Hurley Boys Size 4T Swim TrunksOpens in a new window or tabPre-Owned$8.500 bids · Time left46mor Best Offer+$4.51 delivery
- P.S. from Aeropostale Boys Cool Summer Rashguard Swim Set Size 2T 3T 4T 4 5 6 7Opens in a new window or tabBrand New$16.09Was: $22.9930% offBuy It NowFree deliveryFree returns
- Tommy Bahama Boys Orange Cotton Swim Shorts Drawstring Elastic Waist Sz 4 XS NWTOpens in a new window or tabNew (Other)$12.99Buy It NowFree delivery
- Super Mario Bros. ☆ Little Boys' Swim Trunks ☆ Sizes 4, 5/6, 7Opens in a new window or tabBrand New$19.95Buy It NowFree deliveryFree returns
- Tommy Bahama Size 4 Boy 2 Pc Rash Guard Swimsuit Trunks Tiki Club Short Swim NEWOpens in a new window or tabBrand New$16.17Was: $17.9710% offor Best Offer+$6.55 delivery
- Hurley Board Shorts Boys Sz 4 Swimsuit Surf Trunks Shark Adjustable Waist BlackOpens in a new window or tabPre-Owned$8.99or Best Offer+$5.80 delivery
- PLAY Vtg Boys MINI BODEN Camo Camouflage Colorful Swim Shorts Trunks Size 4/5Opens in a new window or tabPre-Owned$14.95Buy It Now+$6.84 delivery
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- Set Of 2! Maamgic Swim Trunks Swim Shorts Boys Toddler Size 4TOpens in a new window or tabPre-Owned$21.00or Best Offer+$4.99 delivery
- Boys Shark Swim Rash Guard & Trunks Swimsuit Set 50 + Sun Protection NWT Size 4Opens in a new window or tabBrand New$9.95Buy It Now+$6.92 delivery
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- Tommy Bahama Kids Boys Size 4T Aqua Blue Flamingos 2 pc Swim Set Trunks & ShirtOpens in a new window or tabNew (Other)$18.00or Best OfferFree delivery
- SPIDER-MAN MILES MORALES UPF-50+ Swim Trunks Bathing Suit Boys 4, 5-6, or 7 $25Opens in a new window or tabBrand New$15.99Buy It Now+$4.95 delivery in 2-4 daysFree returnsTop Rated Plus
- New! Janie & Jack Boys Size 4 Flamingo Swim Trunks Shorts Suit UPF 50 NWT $42Opens in a new window or tabBrand New$21.95or Best Offer+$6.10 delivery in 2-4 days
- Rugged Bear Toddler Boys' Farm Print Swim Shorts - RBS25P-39GTOpens in a new window or tabBrand New$17.49List price: $19.9412% offBuy It NowFree delivery
- Boys Youth Kids Size 4/5 XS Pokémon Swimming Trunks Beach Vacation SummerOpens in a new window or tabBrand New$8.00or Best Offer+$4.84 delivery
- Jane + Jo Boutique Boys Swim Trunks Shorts Black White Gingham Checkered Size 4tOpens in a new window or tabNew (Other)$12.99Buy It Now+$3.99 delivery
- Speedo Boys Youth Size 8 Learn To Swim Jammer Deep Water Blue 7475114 TrunksOpens in a new window or tabBrand New$22.00or Best OfferFree delivery
- JANIE AND JACK Lot of 2 Swim Trunks Toddler Boys Size 4Opens in a new window or tabPre-Owned$25.00Buy It Now+$5.95 delivery
- SWIM FIX Boy's Swim Trunks Size 4 UPF 50+ Blue Checkered B3-4Opens in a new window or tabBrand New$11.97or Best OfferFree delivery
- NWT Boys Size 10/25 Hurley Swim Board Shorts Trunks Blue Lazer drawstringOpens in a new window or tabBrand New$18.88or Best Offer+$6.55 delivery
- Baby Shark SpongeBob Batman Swim Trunks Sz 4T Toddler VTG Y2KOpens in a new window or tabPre-Owned$25.00or Best Offer+$5.85 delivery
- NWT J. Crew Boys' Navy W/Hibiscus Floral Print Swim Trunk - SIZE 4Opens in a new window or tabBrand New$20.00or Best Offer+$6.40 delivery
- Nike Boys Youth Black Swim Shorts Polyester Drawstring Elastic Waist Size 4 NWTOpens in a new window or tabBrand New$10.14Was: $28.9865% offBuy It Now+$5.95 delivery in 2-4 daysFree returnsTop Rated Plus
- Hatley Dinosaur Swim Trunks Boy’s Size 4Opens in a new window or tabPre-Owned$4.99Buy It Now+$6.55 delivery
- Vintage BLUE’S CLUES Swim Trunks Shorts Beach Pool Size M 4T 2001 Viacom (Q)Opens in a new window or tabPre-Owned$24.99or Best Offer+$6.55 delivery14 watchers
- Catimini Designed in France Boy's Orchid Swim Trunks Size 4Opens in a new window or tabBrand New$30.95Buy It Now+$6.55 delivery
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- Hurley Boys Swim Trunks And Rash Guard Size 4 Black With Shark PrintOpens in a new window or tabPre-Owned$9.99Buy It Now+$4.71 delivery
- Hurley Boy's 4 Way Stretch UPF+50 Drawstring Waist Swim ShortOpens in a new window or tabBrand New$16.99List price: $38.0055% offBuy It NowFree delivery in 2-4 daysFree returnsSave up to 30% when you buy more
- EUC Maamgic Boys Swim Trunks Shorts 4 Palm Trees Green BlueOpens in a new window or tabPre-Owned$9.99or Best Offer+$4.14 delivery
- Land's End Size 4 Boy's Swim Trunks Shark Pattern Great Condition 10" W 12" LOpens in a new window or tabPre-Owned$9.99Buy It Now+$6.23 delivery
- Polo Ralph Lauren Yellow Plaid Swim Trunks Board Shorts Toddler Boys Size 4 / 4TOpens in a new window or tabPre-Owned$19.99Buy It Now+$5.00 delivery
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- Pokémon Two Piece Boys Swimsuit With UPF 50+ Size 4 NWTOpens in a new window or tabBrand New$23.99or Best Offer+$5.99 delivery
- LOT OF 3: Quicksilver Swim Bathing Suits - Board Shorts - Youth Boys Size 3 & 4Opens in a new window or tabPre-Owned$20.00or Best Offer+$7.99 delivery
- Tommy Bahama Boys Swim Shorts Trunks Red White Blue Pocket UV50 Sz 4Opens in a new window or tabBrand New$16.95Buy It Now+$4.57 delivery in 2-4 days
- Hanna Andersson Boys' Swim Trunks, Blue & Green Colorblock, Size 4Opens in a new window or tabPre-Owned$14.99or Best Offer+$4.84 delivery
- Boy Blue Shark Swim Trunks Size 4TOpens in a new window or tabPre-Owned$6.99or Best Offer+$4.51 delivery
- Dolfin Size 4 Boys Swim Trunks Bottoms Yellow With Cars & Drawstring SwimsuitOpens in a new window or tabPre-Owned$8.40Was: $12.0030% offor Best Offer+$5.50 delivery
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