380 results
- 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
- Hurley Little Boys Doodle Tropical Paradise Board Shorts, Size 4Opens in a new window or tabPre-Owned$9.95Buy It NowFree deliveryFree returnsTop 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$14.00Buy It NowFree deliverySave up to 20% when you buy more
- Big Chill Swim Trunks Boys 4 Mesh Lining Drawstring Red Blue Hammerhead SharkOpens in a new window or tabPre-Owned$5.23Was: $6.9725% offor Best Offer+$4.84 deliveryFree returnsTop Rated Plus
- 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
- 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
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- Polo Ralph Lauren Boys Swim Trunks Shorts Classic Navy Sharks SZ 4 NWTOpens in a new window or tabBrand New$26.00Buy It Now+$5.85 delivery
Picked For You
Top selling items from trusted sellers | Sponsored- Polo By Ralph Lauren Kids Boys Adjustable Elastic Waist Lined Swim Trunks Sz 4Opens in a new window or tab$27.99babies_n_things (2,048) 100%
- Hurley Little Boys Doodle Tropical Paradise Board Shorts, Size 4Opens in a new window or tab$9.95kdk_kidsclothes (3,106) 100%
- P.S. from Aeropostale Boys Palm Tree Rashguard Swim Set Size 2T 3T 4T 4 5 6 7Opens in a new window or tab$16.09jljoker87 (85,577) 99.1%
- P.S. from Aeropostale Boys Jawesome Rashguard Swim Set Size 2T 3T 4T 4 5 6 7Opens in a new window or tab$16.09jljoker87 (85,577) 99.1%
- New! Boy's Hurley Multi Stripes Swim Trunks Multiple SizesOpens in a new window or tab$29.95rotehale (1,049) 98.9%
- New! Boy's Hurley Multi Shark Print Swim Trunks Multiple SizesOpens in a new window or tab$29.95rotehale (1,049) 98.9%
- P.S. from Aeropostale Boys Surf Pizza Rashguard Swim Set Size 2T 3T 4T 4 5 6 7Opens in a new window or tab$16.09jljoker87 (85,577) 99.1%
- Art Class Boys Size 4 Orange/Black Swim Trunks X5ZZK Walking/Swim TrunksOpens in a new window or tab$9.58clearchoicellc (2,254) 100%
- JURASSIC WORLD T-REX 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
- Minecraft Boys Swimsuit Size 4 5 7 8 12 Swim Trunks Rash Guard Shirt Set CreeperOpens in a new window or tabBrand New$28.01 to $34.59Was: $29.806% offBuy It Now+$5.35 delivery
- Love Brand & Co Boys Classic Code Ray Staniel Swim Shorts Swim Trunks 4-6 YearsOpens in a new window or tabPre-Owned$39.99Buy It Now+$3.99 delivery
- Nautica Boys Swim Shorts Size4TOpens in a new window or tabPre-Owned$0.990 bids · Time left1d 6h+$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
- Lands' End Swim Trunks Boy's Small 4 Green Orange Floral Hawaiian Board ShortsOpens in a new window or tabPre-Owned$6.98Was: $13.9550% offor Best Offer+$6.95 delivery in 2-4 daysFree returnsExtra 10% off with couponTop Rated Plus
- TOMMY BAHAMA Boy’s Size XS (4) Blue Swim Trunks PocketsOpens in a new window or tabPre-Owned$6.39Was: $7.9920% offor Best Offer+$6.00 deliveryFree returnsExtra 20% off with couponTop 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 delivery in 2-4 daysFree returnsTop Rated Plus
- Hurley Swim Shorts, Little Boys Size 4, Logo, Striped, LinedOpens in a new window or tabPre-Owned$6.97Buy It Now+$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 returns4+ watchersTop Rated Plus
- 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
- 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
From our popular brands
Based on number of views and purchases | Sponsored- HurleyHurley Little Boys Doodle Tropical Paradise Board Shorts, Size 4Opens in a new window or tabPre-Owned$9.95Free delivery
- DisneyVintage Y2K Disney Pixar World of Cars Lightning McQueen Swim Trunks Size 4Opens in a new window or tabPre-Owned$8.99+$7.35 delivery
- HurleyNew! Boy's Hurley Multi Stripes Swim Trunks Multiple SizesOpens in a new window or tabBrand New$29.95Free delivery
- DisneyCARS LIGHTNING McQUEEN UPF-50+ Swim Trunks Bathing Suit NWT Boys 4, 5-6 or 7 $25Opens in a new window or tabBrand New$14.39+$4.95 deliverySave up to 20% when you buy more
- QuiksilverQuiksilver Boys Size 4 Everyday Scallop Black Tribal Drawstring Boardshorts NEWOpens in a new window or tabBrand New$27.36+$5.35 delivery
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- GapNWT BabyGap Shorts Swim Trunks Boys Sz 4 Octopus Coral Reef UPF 40 Lined GreenOpens in a new window or tabBrand New$24.99Free delivery
- ArtArt Class Boys Size 4 Orange/Black Swim Trunks X5ZZK Walking/Swim TrunksOpens in a new window or tabPre-Owned$9.58Free delivery
- SpeedoSpeedo Boys Swim Trunks Drawstring Mesh Cargo Black Size 4Opens in a new window or tabBrand New$13.99+$6.30 delivery
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- 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
- 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 deliveryLast one
- Space Jam A New Legacy 2 Boys Swimsuit Swim Trunks Short Tune Squad Size 4 5 5TOpens in a new window or tabBrand New$25.15Was: $26.756% offBuy It Now+$4.80 delivery
- HURLEY Boys Swimsuit Swim Trunks Size 4-16 SHARK Shorts Board Boardshorts BlackOpens in a new window or tabBrand New$21.48Was: $22.856% offBuy It Now+$4.90 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
- NWT BabyGap Shorts Swim Trunks Boys Sz 4 Octopus Coral Reef UPF 40 Lined GreenOpens in a new window or tabBrand New$24.99Buy It NowFree delivery in 2-4 days
- 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 returnsTop Rated Plus
- Boys Oshkosh Size 4 Swim Trunks and swim shirtOpens in a new window or tabPre-Owned$8.75or Best Offer+$4.84 delivery
- Hanna Andersson Boys' Swim Trunks, Blue & Green Colorblock, Size 4Opens in a new window or tabPre-Owned$14.99or Best Offer+$4.84 delivery
- POKEMON PIKACHU Swim Trunks UPF-50+ Bathing Suit NWT Boys Sizes 4, 5-6 or 7 $25Opens in a new window or tabBrand New$15.29Was: $16.9910% offBuy It Now+$4.95 delivery in 2-4 daysFree returnsSave up to 20% when you buy moreTop Rated Plus
- Marvel☆Toddler & Boys' Black Panther Costume Rash Guard & Swim Trunks Set☆ 2T-16Opens in a new window or tabBrand New$29.95Buy It NowFree deliveryFree returns
- 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
- 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
- Set Of 2 Baby Gap Swimming Trunks And Matching Rash Guards Size 4T (XS)Opens in a new window or tabPre-Owned$12.000 bids · Time left6d 18hor Best Offer+$7.00 delivery
- 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
- P.S. from Aeropostale Boys Jawesome 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 returnsTop Rated Plus
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- 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
- CARS LIGHTNING McQUEEN 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
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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
- 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
- Nike Boys Youth Black Swim Shorts Polyester Drawstring Elastic Waist Size 4 NWTOpens in a new window or tabBrand New$14.49Was: $28.9850% offBuy It Now+$6.95 delivery in 2-4 daysFree returnsTop Rated Plus
- 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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- Wonder Nation Shark Swimsuit Lined Swim Trunks Shorts Swimwear Blue Boys Sz 4/5Opens in a new window or tabPre-Owned$12.00or Best Offer+$8.71 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
- 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 Boy’s 2 Pc Swim Set Size 4Opens in a new window or tabBrand New$15.99Buy It Now+$4.49 delivery
- Boy Blue Shark Swim Trunks Size 4TOpens in a new window or tabPre-Owned$6.99or Best Offer+$4.51 delivery
- Polo Ralph Lauren Toddler Swim Trunks Navy With Red PonyOpens in a new window or tabPre-Owned$30.00or Best Offer+$5.99 delivery
- HURLEY Boy's Color Block Swim Trunks Board Shorts Pink Blue SIZE 4TOpens in a new window or tabBrand New$17.99Buy It NowFree delivery
- Love Brand & Co Two Peas in a Pod Swim Shorts Trunks Blue Boys Size 4-6Opens in a new window or tabPre-Owned$19.99Buy It Now+$5.00 delivery in 2-3 daysFree returnsTop Rated Plus
- Polo Ralph Lauren Boys Swimsuit Sz 4 Colorful Stripes Logo Summer Pool VacationOpens in a new window or tabPre-Owned$8.49Was: $9.9915% offBuy It Now+$4.33 delivery
- ZeroXposur Boys 2 Pc Swim Set Blue splashes UPF 30+ boy sz 4 NWTOpens in a new window or tabBrand New$8.99or Best Offer+$6.99 delivery in 2-4 daysFree returns
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- 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
- Janie and Jacque boys flamingo swim trunks size 4Opens in a new window or tabPre-Owned$10.00Buy It Now+$4.71 delivery
- NWT Janie and Jack Size 4 COASTAL GETAWAY Sailboat Swim Shorts PocketOpens in a new window or tabBrand New$16.00Buy It Now+$6.25 delivery
- Star Wars Boys Swim Trunks Swimsuit Rash Guard Shirt Set Darth Vader Size 4 NWTOpens in a new window or tabBrand New$23.45Was: $24.956% offBuy It Now+$4.80 delivery3 watchers
- Janie & Jack Boys Size 4 Swim Trunks NEW Navy Blue Ships Boats Shorts SwimsuitOpens in a new window or tabBrand New$17.49Was: $24.9930% offor Best Offer+$5.65 deliveryFree returnsExtra 15% off with couponTop Rated Plus
- Boy's Youth Hurley Swim Board ShortsOpens in a new window or tabBrand New$21.99Buy It NowFree delivery in 2-4 days
- Sz 4-12 Super Mario Kart Swimsuit Set Swim Trunks Rash Guard Nintendo Boys LuigiOpens in a new window or tabBrand New$29.05 to $35.63Was: $30.906% offBuy It Now+$5.95 delivery1+ watchers
- Speedo Boy's Swimsuit Jammer Begin to Swim Solid, Size 4, BlackOpens in a new window or tabBrand New$10.00or Best Offer+$4.84 delivery
- Boy's 4T Swim Trunks Circo Floral Drawstring w/ LinerOpens in a new window or tabPre-Owned$4.94Was: $5.4910% offBuy It Now+$5.85 delivery
- Tommy Bahama Kids Boys Size 4T Aqua Blue Flamingos 2 pc Swim Set Trunks & ShirtOpens in a new window or tabBrand New$24.99or Best Offer+$6.55 delivery
- NEW LITTLE BOYS ART CLASS UPF 50+ BOARD SHORTS SWIM TRUNKS SHORTS SIZE 4Opens in a new window or tabBrand New$8.95or Best Offer+$6.55 delivery
- 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
- Boys Size 4T Cat & Jack Green Turtle easy on easy off Drawstring Swimming TrunksOpens in a new window or tabBrand New$7.00or Best Offer+$5.50 deliveryFree returnsLast one
- Vintage Y2K Disney Pixar World of Cars Lightning McQueen Swim Trunks Size 4Opens in a new window or tabPre-Owned$8.99or Best Offer+$7.35 delivery
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