3,100+ results
- Chubbies Kids Boys Gray Classic Dinosaur & Palm trees Swim Trunks 4Opens in a new window or tabPre-Owned$12.00or Best Offer+$6.30 delivery
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- Vintage Summer Floral Print Kids Swim Shorts Trunks ~ 4Opens in a new window or tabPre-Owned$12.00or Best Offer+$4.84 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
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- Patagonia Boys Baby Baggie Shorts Orange Green Blue Yellow 4TOpens in a new window or tabPre-Owned$32.00Buy It Now+$4.70 delivery11 watchers
- Polo Ralph Lauren TRAVELER SCUBA BEAR SWIM TRUNKS SIZE 4-4T GOODOpens in a new window or tabPre-Owned$29.990 bids · Time left49m+$16.65 delivery
- Hurley Youth Boy's UPF 50+ Long Sleeve Rash Guard Swim TopOpens in a new window or tabBrand New$12.99List price: $26.0050% 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- Polo By Ralph Lauren Kids Boys Adjustable Elastic Waist Lined Swim Trunks Sz 4Opens in a new window or tab$27.99babies_n_things (2,063) 100%
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- Charlie Rocket Boys Lobster Shorts, Blue, 4TOpens in a new window or tab$15.96beckysbargainbarn113 (13,530) 99%
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- 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
- 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
- NWT Vilebrequin France Surfing Turtles Green Swim Shorts Youth Trunks Sz 4Opens in a new window or tabBrand New$65.00or Best Offer+$4.84 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
- Vineyard Vines Boys Chappy Swim Trunks Size 4T Swim Suit Seahorse Print BeachOpens in a new window or tabPre-Owned$22.00or Best Offer+$6.55 delivery
From our popular brands
Based on number of views and purchases | Sponsored- VilebrequinNWT AUTHENTIC VILEBREQUIN SWIM TRUNKS - WATER REACTIVE - KIDS- BLUE - 4 YEARSOpens in a new window or tabBrand New$65.00+$5.95 delivery
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- HurleyHurley Boy's UPF50+ Drawstring Waist Pull On Swim ShortOpens in a new window or tabBrand New$14.99Free deliverySave up to 30% when you buy more
- NikeNike Swim Kids Long Sleeve Shirt Have A Nike Day Graphic Blue Dri Fit UPF 40+Opens in a new window or tabBrand New$15.29+$4.14 delivery
- DisneyDISNEY STORE TOY STORY SWIM TRUNKS RARE Print SZ 4Opens in a new window or tabPre-Owned$20.00Free 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
- HurleyLittle Boy's Youth Hurley 2 Piece UPF 50+ H2O Dri Swim Shirt Swim Trunks SetOpens in a new window or tabBrand New$24.99Free delivery
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- 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
- MarvelAVENGERS BOYS SZ 4 SWIMMING TRUNKS HULK SPIDERMAN IRON MAN ELASTIC WAISTOpens in a new window or tabPre-Owned$3.76+$9.39 delivery
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- Hurley Boy's 4 Way Stretch Quick Dry Swim Shorts size L (10-12) SharksOpens in a new window or tabPre-Owned$8.00or Best Offer+$6.95 delivery
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- Boy Swimsuit Quick Dry Swimwear Beach Bathing Suit Wetsuit Kids Shark Print SetOpens in a new window or tabNew (Other)$16.49Buy It Now+$3.99 deliveryfrom China
- 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
- Vintage Patsy Aiken Designs Kids Toddler Shorts Golf Color Block Swim ShortsOpens in a new window or tabPre-Owned$14.49or Best Offer+$6.55 deliveryFree returnsExtra 10% off with coupon
- Scooby Doo Life Guard Swim Trunks Boys 4Opens in a new window or tabPre-Owned$13.50Was: $15.0010% offor Best Offer+$4.51 delivery
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- Prodoh Boys Boogie Board Swim Trunks - Blue Tropical Breeze Boat Print 4TOpens in a new window or tabPre-Owned$32.00or Best Offer+$4.84 delivery
- Mini Boden Boys 3-4 Yr Swim Trunks With Matching Rash guardOpens in a new window or tabPre-Owned$18.00or Best Offer+$4.84 delivery
- Boy's Youth Hurley 2 Piece UPF 50+ H2O Dri Swim Long Sleeve Shirt Swim NewOpens in a new window or tabBrand New$24.99Buy It NowFree delivery in 2-4 daysFree returnsTop Rated Plus
- Little Boy's Youth Hurley 2 Piece UPF 50+ H2O Dri Swim Shirt Swim Trunks SetOpens in a new window or tabBrand New$24.99Buy It NowFree delivery in 2-4 daysFree returnsTop Rated Plus
- Kids Tommy Bahama Size 4T Swim Trunk Short Red White Blue Plaid Yellow Fish LogoOpens in a new window or tabPre-Owned$17.99or Best Offer+$4.99 deliveryFree returnsTop Rated Plus
- Kids Boys Swimwear Summer Rash Guard Outfits Swimsuit Diving Beachwear PartyOpens in a new window or tabNew (Other)$14.29 to $26.19Buy It Now+$3.99 deliveryfrom China
- Spider-Man Swinging Action Youth Swim Shorts & Rash Guard Set Multi-ColorOpens in a new window or tabBrand New$19.99Buy It NowFree delivery
- SURF Boys Swim Trunks Boys Bathing Suit Size from 2T to 18/20 Blind boxOpens in a new window or tabBrand New$1.99 to $2.99Buy It Now+$5.50 delivery in 2-4 daysSave up to 20% when you buy more
- Boden Mini Rash Guard Vest 3-4 Yr Green Blue Turtle Sun Protection L/SleeveOpens in a new window or tabPre-Owned$12.00Buy It Now+$4.99 delivery
- NWOT Mini Boden Appliqué Towelling Throw-on Cabana Blue/Ivory OctopusOpens in a new window or tabNew (Other)$28.00Buy It Now+$6.84 delivery
- 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 delivery3+ watchers
- Boys Swimwear 4T Swim Shirt & 3 T Trunks -Cute Sharks, Fish & Octopus PatternOpens in a new window or tabPre-Owned$8.99or Best Offer+$6.80 delivery
- NEW Lot of 2 NIKE Athletic Shorts & Swim / Boardshorts Boy's Sz 4 NWTOpens in a new window or tabBrand New$11.99or Best Offer+$4.30 delivery
- Sonic The Hedgehog Swim Trunks Blue Boys Size 4/5Opens in a new window or tabPre-Owned$4.80Was: $6.0020% offor Best Offer+$5.84 deliveryFree returnsTop Rated Plus
- MINECRAFT MINI FIGURES UPF-50+ Bathing Suit Swim Trunks NWT Boys 4, 5-6 or 7 $25Opens in a new window or tabBrand New$14.99Was: $24.9840% offBuy It Now+$4.95 deliveryFree returnsSave up to 20% when you buy moreTop Rated Plus
- O Neill Reactor-2 2mm Back Zip Youth Kid’s Fullsuit Wetsuit Size 4Opens in a new window or tabBrand New$79.95Buy It NowFree 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
- Disney Cars Swim Trunks Boys 4T Board Shorts Bathing Suit Lightning McQueenOpens in a new window or tabPre-Owned$6.00or Best Offer+$4.51 delivery
- Lot of 5 Kanu Surf Boys Swim Trunks size 4 and 2 Swim shirtsOpens in a new window or tabPre-Owned$35.00Buy It Now+$8.19 delivery
- NEW Under Armour Boys Rashguard & Swim Trunks Shorts 2PC Set, UPF50 (sz 4, 6)Opens in a new window or tabBrand New$16.97 to $17.97Buy It Now+$4.75 deliverySave up to 10% when you buy more
- Boys Hurley Swim Shorts Rash Guard Trunks 4t Shark Black Camo OrangeOpens in a new window or tabNew (Other)$10.00or Best Offer+$4.84 delivery
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- Boys Size 4 Power Rangers Rash Guard Swim TopOpens in a new window or tabPre-Owned$11.00or Best Offer+$4.84 delivery
- New Nike Little Boys Logo 6" Volley Swim Shorts Choose Size & Color MSRP $34Opens in a new window or tabBrand New$17.95Buy It NowFree delivery
- DC Comics ☆ Boys' Batman or Superman Rash Guard with Towel Cape ☆ Size 4Opens in a new window or tabBrand New$19.95Buy It NowFree deliveryFree returns
- P.S. from Aeropostale Boys Swim Set with Short Sleeve RashguardOpens in a new window or tabBrand New$12.99List price: $17.9928% offBuy It NowFree deliveryFree returns2+ watchersTop Rated Plus
- Size S (4) Boys Minecraft Swim Trunks UPF 50Opens in a new window or tabBrand New$9.99Buy It NowFree deliveryLast one
- $90 The Animals Observatory Boy's Beige Stripe Print Nylon Swim Shorts Size 4YOpens in a new window or tabBrand New$25.53Was: $72.9565% offor Best Offer+$9.99 delivery in 2-4 daysExtra 6% off with coupon
- Boys Cat And Jack 4t Swim Trunks —Safari PrintOpens in a new window or tabPre-Owned$5.00or Best Offer+$4.84 delivery
- Rash Guard Swim Shorts Set 4 Boys Blues Swimfix Short SleevesOpens in a new window or tabBrand New$18.95Buy It Now+$4.95 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 left6d 8hor Best Offer+$4.71 delivery
- Hurley Boy's Long Sleeve Dri-Fit UPF 50+ Swim ShirtOpens in a new window or tabBrand New$16.98List price: $26.0035% offBuy It NowFree delivery in 2-4 daysFree returnsSave up to 30% when you buy more
- Minecraft Boys Swimsuit Size 4 5 7 8 12 Swim Trunks Rash Guard Shirt Set CreeperOpens in a new window or tabBrand New$29.80 to $36.80Buy It Now+$5.35 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
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- Thomas & Friends Swim Trunks 4T Boys Faster! Faster! Thomas the tank engineOpens in a new window or tabPre-Owned$10.83or Best Offer+$5.75 delivery
- 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
- St. Eve Boys Swim Beach Coverup with Hood Pirate WhiteOpens in a new window or tabBrand New$24.99Buy It NowFree delivery in 2-4 days
- Sonic The Hedgehog Boys 4 Graphic UPF 50+ Short Sleeve Rash Guard Swim Tee NWTOpens in a new window or tabBrand New$13.32Was: $15.6715% offor Best Offer+$5.99 deliveryFree returnsExtra 15% off with couponTop Rated Plus
- 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
- Polo Ralph Lauren Polo Bear Performance Rash Guard Little Boy's 4 Multicolor L/SOpens in a new window or tabBrand New$21.45or Best Offer+$5.95 deliveryFree returnsTop Rated Plus
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