1,200+ results
- Hurley Board Shorts Boys Size XS 21x6 Floral Print BlackOpens in a new window or tabPre-Owned$11.10Buy It NowFree deliveryFree returns
- Gap Kids Boys Size XSmall 4/5 Mesh Lined Blue Brown Floral Swim Trunks ShortsOpens in a new window or tabPre-Owned$7.99Was: $9.9920% offor Best Offer+$7.99 deliveryFree returnsExtra 15% off with couponTop Rated Plus
- Vintage Pro Spirit Kids Swim Trunks 90s Style Size XS 4-5Opens in a new window or tabPre-Owned$14.00or Best Offer+$4.84 delivery
- NEW - Reima Kroolaus Rashguard Swim Top - NAVY BLUE - Size 9YOpens in a new window or tabBrand New$21.00Was: $30.0030% offor Best Offer+$4.95 delivery
- Vintage Size Boys Flarico Swim Athletic Supporter Boys Size X-Small From 1970sOpens in a new window or tabBrand New$19.95Buy It Now+$4.95 delivery
- Member's Mark 2-Piece Family Swim Boy's Rashguard & Swim Trunk SetOpens in a new window or tabBrand New$12.99List price: $24.0046% offBuy It NowFree delivery in 2-4 daysFree returnsSave up to 30% when you buy moreTop Rated Plus
- Vintage Size Boys Flarico Swim Athletic Supporter Boys Size X-Small From 1970sOpens in a new window or tabBrand New$18.95Buy It Now+$4.95 delivery
- Boys Swim Old Navy XS (5)Opens in a new window or tabPre-Owned$5.000 bids · Time left15m+$4.84 delivery
Picked For You
Top selling items from trusted sellers | Sponsored- Hurley Board Shorts Boys Size XS 21x6 Floral Print BlackOpens in a new window or tab$11.10gmostwanted21 (4,358) 99.6%
- TYR Boys' Durafast ONE Jammer Swimsuit, Black, 26 XSOpens in a new window or tab$27.91shoppermaxx (15,660) 99.8%
- REI 1/2 Sleeve Rash Guard Swim Shirt Top BoysXS 6-7 Black Green Nylon SpandexOpens in a new window or tab$16.95bearysattic (2,911) 100%
- Speedo Boys 2pk Swim Tee Short Sleeve new with tagsOpens in a new window or tab$15.30thebestforless75 (4,893) 100%
- Adidas Supernova Recreational Swim Shorts Boys X-Small Ocean Blue, Deep BlueOpens in a new window or tab$29.99ezshipshp (1,376) 98.3%
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- Saint eve Swim KIDS Beach Cover Up Dinosaur(GREEN TYE DYE XS 5/6)NWTOpens in a new window or tab$19.99gcsservices (22,548) 99.2%Save up to 15% when you buy more
- Disney Cars Boys Swim Trunks Lightning McQueen Swim Shorts Pixar Size XS 4/5 NWTOpens in a new window or tabBrand New$19.99or Best Offer+$6.20 delivery
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- Spiderman Blue Swim Trunks Boys Size XSmallOpens in a new window or tabPre-Owned$4.99or Best Offer+$4.51 delivery
- Ocean Gear Orange Rashguard and Swim Trunks Boys Size XSmallOpens in a new window or tabPre-Owned$4.99or Best Offer+$4.84 delivery
- Boden Boys 9 Yr Swim Trunks Sea Life Elastic Drawstring Waist Pockets MulticolorOpens in a new window or tabPre-Owned$15.59Buy It Now+$6.55 delivery
- TYR Boys' Durafast ONE Jammer Swimsuit, Black, 26 XSOpens in a new window or tabNew (Other)$27.91Was: $34.8920% offBuy It NowFree deliveryFree returnsTop Rated Plus
- Minecraft swim trunk and rashguardOpens in a new window or tabPre-Owned$8.00or Best Offer+$4.84 delivery
- REI Co-op Yellow Swim Shorts size X-Small (6-7)Opens in a new window or tabPre-Owned$18.00Buy It Now+$4.52 delivery
- Patagonia Swim Suit Boys XS Youth 24" waist 5" inseam Elastic NAVY BLUE ShortsOpens in a new window or tabPre-Owned$12.95or Best Offer+$6.57 deliveryExtra 15% off with coupon
- Chubbies Kids Swimming Trunks 4T-5TOpens in a new window or tabPre-Owned$20.00or Best Offer+$4.71 delivery
- Lilly Pulitzer Boys Size Toddler 3-4 Junior Capri Swim Trunks Bathing SuitOpens in a new window or tabPre-Owned$19.95Buy It NowFree delivery
- Cat & Jack Boys 3 Color Tiered Swim Trunks Swimsuit UPF 50+ Size XL 16 HuskyOpens in a new window or tabBrand New$10.99Buy It NowFree deliverySave up to 20% when you buy more
From our popular brands
Based on number of views and purchases | Sponsored- HurleyHurley Board Shorts Boys Size XS 21x6 Floral Print BlackOpens in a new window or tabPre-Owned$11.10Free delivery
- GapGap Kids Boys Size XSmall 4/5 Mesh Lined Blue Brown Floral Swim Trunks ShortsOpens in a new window or tabPre-Owned$7.99+$7.99 deliveryExtra 15% off with coupon
- MarvelSpiderman Blue Swim Trunks Boys Size XSmallOpens in a new window or tabPre-Owned$4.99+$4.51 delivery
- NikeNike Swim Trunks Boys XS *estimated* Light Blue Brief LinedOpens in a new window or tabPre-Owned$12.00+$4.99 delivery
- ArtArt Class Toddlers Salmon Drawstring Lined Swim Trucks Size XS 4-5Opens in a new window or tabPre-Owned$5.00+$5.00 delivery
- HurleyHURLEY Character Check Pull-On Swim Trunks 28 in W Boys L Mens XSOpens in a new window or tabBrand New$12.99+$6.40 delivery
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- DisneyCars 3 ~ Disney/Pixar Characters Little Boys Swim Shorts Size XS 4/5Opens in a new window or tabPre-Owned$12.95+$4.00 delivery
- SpeedoSpeedo Boys 2pk Swim Tee Short Sleeve new with tagsOpens in a new window or tabNew (Other)$15.30Free delivery
- TrunksBuc-ees Youth Xs Lined Polyester Shorts Swim Trunks BuceesOpens in a new window or tabPre-Owned$9.29+$4.84 delivery
- ArtArt Class 3Pc MultiColor Rash-guard Swimsuit Size XS (4/5)Opens in a new window or tabBrand New$12.00+$4.84 delivery
- Nike Swoosh Swim Shorts Trunks NESSB-451-001 Black / Gray Size XS NWTOpens in a new window or tabBrand New$25.00or Best Offer+$6.40 delivery
- Vilebrequin Boys Blue Swim Trunks Sz XSOpens in a new window or tabPre-Owned$40.00or Best Offer+$4.84 delivery
- BRAND NEW BOYS SIZE X-SMALL 4-5 WONDER NATION 4 WAY STRETCH SWIM TRUNKSOpens in a new window or tabBrand New$7.99Buy It NowFree delivery
- ABERCROMBIE AND FITCH KIDS SWIM TRUNKS CAR & HAWAIIAN FLOWER PRINT SIZE 9/10Opens in a new window or tabPre-Owned$5.250 bids · Time left4d 22hor Best Offer+$6.55 delivery
- Lilly Pulitzer Boys Capri Swim Trunks Pink Blue White Lavender Size XSOpens in a new window or tabPre-Owned$22.99or Best Offer+$5.99 delivery
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- Patagonia Boys XS Extra Small Orange Swim Trunks Bottoms Shorts SolidOpens in a new window or tabPre-Owned$17.00Buy It NowFree delivery
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- Mini Boden Swim Shorts Swimtrunks Boys Green Turtle Size 9/10Opens in a new window or tabPre-Owned$24.11or Best Offer+$5.75 deliveryFree returnsTop Rated Plus
- Boys' Solid Swim Trunks - art class Light Blue XS 4/5Opens in a new window or tabBrand New$7.00Was: $10.0030% offor Best Offer+$3.89 deliveryFree returnsTop Rated Plus
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- Lilly Pulitzer Boy's Blue Swim Trunks Shorts Size XSOpens in a new window or tabPre-Owned$15.99Buy It Now+$4.49 delivery
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- Osprey Wetsuit OSX Series Youth XS Full Length Long Sleeve Size Junior BlackOpens in a new window or tabPre-Owned$28.00or Best Offer+$9.00 delivery
- Rokka&Rolla Boys Swim Trunk Mesh Lined Bathing Suit UPF50+Quick Dry Beach ShortsOpens in a new window or tabBrand New$25.50Was: $36.4330% offBuy It NowFree delivery in 2-4 daysFree returnsTop Rated Plus
- Old Navy Rainbow Striped Swim Trunks Boy Size XSOpens in a new window or tabPre-Owned$19.99or Best Offer+$8.99 delivery
- Gap Boys Swim Outfit Shirt Rashguard & Swim Trunks Shorts Blue Size XS 4/5 EUCOpens in a new window or tabPre-Owned$20.00Buy It Now+$6.00 delivery
- Boys Columbia Swim Trunks Tropical XS 6/7Opens in a new window or tabPre-Owned$0.991 bid · Time left4d+$5.00 delivery
- Nike Boys Fade Sting Jammer Swimsuit Size 22 NESS8052-705 Varsity Maize XSOpens in a new window or tabBrand New$9.990 bids · Time left1d 12h+$5.00 delivery
- Cat & Jack Swim Trunks Boys Size XS 4-5 Stripe Lined BlueOpens in a new window or tabPre-Owned$3.76Was: $5.7935% offor Best Offer+$5.85 deliveryFree returnsTop Rated Plus
- Volcom Lido Print Mod Boardshorts Boys' 29 (XL) Mens (XS) CleanwaterOpens in a new window or tabBrand New$15.99Buy It Now+$6.40 delivery
- Cat & Jack pink yellow pizza swim trunks liner cut out size XS 4/5Opens in a new window or tabPre-Owned$15.00or Best Offer+$6.55 delivery
- Boys' Ombre Zebra Striped Swim Shorts - art classâ„¢ Blue NWTOpens in a new window or tabBrand New$9.99Buy It Now+$4.84 delivery
- Lilly Pulitzer boys swim trunks XS in celestial seas starfish printOpens in a new window or tabPre-Owned$33.77Buy It Now+$4.84 delivery
- Original Penguin Swim Shorts Boys UPF 50 NEW with Tags Blue Multi Waves Size 9Opens in a new window or tabBrand New$8.00or Best Offer+$5.00 delivery
- Sonic The Hedgehog Swim Trunks Boys Size XS 4/5Opens in a new window or tabPre-Owned$6.99or Best Offer+$4.84 delivery
- Member's Mark Boy's 4-Way Stretch Quick Dry Resort Swim Trunk Shark Galore XSOpens in a new window or tabBrand New$10.79Was: $11.9910% offBuy It NowFree delivery in 2-4 days
- Lilly Pulitzer Toddler Boys Swim Shorts New XSOpens in a new window or tabBrand New$40.00or Best Offer+$4.84 delivery
- Columbia Boys' XS 6/7 PFG Backcast Short Black Omni-Shade UPF 50 NewOpens in a new window or tabBrand New$14.99or Best Offer+$5.75 delivery
- 2x STAR WARS Boy's XS 4/5 Blue Swim Suits/Trunks/Board Shorts Yoda Grogu VaderOpens in a new window or tabPre-Owned$5.00or Best Offer+$8.95 delivery in 2-4 days
- BOYS JOE BOXER SWIM TRUNKS BOARD SHORTS BLACK & Green XS 4-5Opens in a new window or tabPre-Owned$1.000 bids · Time left1d 23h+$4.84 delivery
- The Child Boys Baby Yoda Swim Trunks Swimsuit Star Wars Mandalorian Size XSOpens in a new window or tabPre-Owned$6.00or Best Offer+$5.31 delivery
- Salt Life Boy’s Stealth Brigade Youth Boardshorts NWT Size XSMOpens in a new window or tabBrand New$21.60Was: $24.0010% offor Best Offer+$5.80 delivery
- Star Wars The Mandalorian Boys' Baby Yoda Swim Short Size XS(4-5)/ NewOpens in a new window or tabBrand New$7.00Was: $10.0030% offBuy It Now+$5.24 deliveryExtra 10% off with coupon
- Chubbies NEW NWT Youth XS Classic Lined Swim Trunks True BluesOpens in a new window or tabNew (Other)$30.00or Best Offer+$4.84 delivery
- Old Navy Boys Black Swim Trunks Size 5 (XS)Opens in a new window or tabPre-Owned$6.00Buy It Now+$4.51 delivery
- NEW Kid Boy XS SpongeBob Squarepants Swim Trunks Swimsuit Board Shorts LinedOpens in a new window or tabBrand New$14.95or Best Offer+$5.95 deliveryLast one
- Sz 4-12 Boys Baby Yoda Swim Trunks Shorts Swimsuit Star Wars Mandalorian GroguOpens in a new window or tabBrand New$25.29Was: $26.906% offBuy It Now+$4.95 delivery
- Cat & Jack XS/S White Cover Up Sweatshirt Long Sleeve Hoodie Swim Terry ClothOpens in a new window or tabBrand New$9.81or Best OfferFree deliverySave up to 25% when you buy more
- Sz 4-16 Boys Baby Yoda Swim Trunks Shorts Swimsuit Star Wars Mandalorian GroguOpens in a new window or tabBrand New$24.50 to $26.50Buy It Now+$4.95 delivery
- NWT *GAP* Boys SS Swim Rashguard Navy Blue Waves *size XS 4-5*Opens in a new window or tabBrand New$10.99Buy It Now+$4.51 delivery
- Art Class Toddlers Salmon Drawstring Lined Swim Trucks Size XS 4-5Opens in a new window or tabPre-Owned$5.00or Best Offer+$5.00 delivery
- Speedo swim trunks boys Shark Blue Yellow XSOpens in a new window or tabPre-Owned$5.60or Best Offer+$4.33 delivery
- Hurley Boys' Rash Guard Shirt Black/Printed 4 XSOpens in a new window or tabBrand New$12.00Buy It NowFree delivery
- Op Boys Swim Trunks Green Camouflage Board Shorts Mesh Pockets 4-5 XSOpens in a new window or tabPre-Owned$5.07or Best Offer+$4.65 deliveryFree returnsExtra 20% off with coupon
- DISNEY Store Mickey Mouse Swim Trunks for Boys UPF 50+ NEW WITH TAG (Size 9/10)Opens in a new window or tabBrand New$25.00or Best Offer+$8.55 delivery
- Sonic The Hedgehog Swimsuit XS Boys NewOpens in a new window or tabNew (Other)$12.60Was: $14.0010% offBuy It NowFree deliveryFree returnsTop Rated Plus
- Nike Swim Jammer Shorts Boys Youth Techno Camo Swimwear Bottoms TESS0041Opens in a new window or tabBrand New$19.99Buy It NowFree deliveryFree returnsTop Rated Plus
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- FINA APPROVED YINGFA 9205 MEN'S BOY'S COMPETITION JAMMER SWIMMING TRUNK ALL SIZEOpens in a new window or tabBrand New$29.99Buy It NowFree deliveryfrom China
- Rokka&Rolla Boy‘s Compression Liner Swim Trunks Quick Dry Bathing SuitOpens in a new window or tabBrand New$29.99Was: $42.8430% offBuy It NowFree delivery in 2-4 daysFree returnsTop Rated Plus
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