2,700+ results
- Body Glove Swim Trunks. Youth XL/size 18. Never Worn.Opens in a new window or tabNew (Other)$18.00or Best Offer+$4.44 delivery
- New Chubbies Lined Stretch Swim Shorts The Glades BoysOpens in a new window or tabNew (Other)$21.50Buy It Now+$4.84 delivery
- 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
- Vilebrequin Boys Orange Printed Shrimp Swim Shorts Swim Trunks Size 12Opens in a new window or tabPre-Owned$40.00or Best Offer+$5.25 delivery
- Hurley Kids' Boys' Youth Block Party 17" BoardshortsOpens in a new window or tabBrand New$30.00List price: $55.0045% offBuy It NowFree deliveryBuy 1, get 1 20% off with coupon
- Tea Collection Checkered Mid-Length Swim Trunks Shorts UPF 50 Swimwear Boys 12Opens in a new window or tabBrand New$11.24Was: $14.9925% offor Best Offer+$6.99 deliveryFree returnsSave up to 20% when you buy moreTop Rated Plus
- Patagonia Boys Size 12 Wavefarer Board Shorts Summer Orange Blue Palm LeavesOpens in a new window or tabPre-Owned$7.00or Best Offer+$4.71 deliveryFree returns
- Patagonia Swim Baggies Shorts Kids L (12) Yellow Mesh Lined Trunks Pockets BeachOpens in a new window or tabBrand New$22.93or Best Offer+$6.90 delivery
Picked For You
Top selling items from trusted sellers | Sponsored- Boys Youth Lot of 9 Shorts, Swim Trunks, Shirts, Slides, Size 12 – 13Opens in a new window or tabPre-Owned$14.990 bids · Time left1d 1h+$12.41 delivery
- Boy's Youth Billabong Recycler Pro Wave Washed Boardshorts SwimOpens in a new window or tabBrand New$22.99Buy It NowFree delivery in 2 daysFree returnsTop Rated Plus
- Boy's Youth Hurley Board Shorts SwimOpens in a new window or tabBrand New$19.99Buy It NowFree delivery in 2 daysFree returnsSave up to 10% when you buy moreTop Rated Plus
- Quiksilver NWT Boys' Gray Amphibian Walkshorts for Water and Land Size 26/12Opens in a new window or tabBrand New$18.99or Best Offer+$5.99 delivery
- Boys Speedo Blue Jammers Swimsuit 12Opens in a new window or tabPre-Owned$27.00or Best Offer+$5.10 delivery
- Kith Kids Boys Floral Print Drawstring Waist Swim Trunks Blue Size 12Opens in a new window or tabNew (Other)$44.99or Best Offer+$4.95 deliveryExtra 25% off with coupon
- Sundek Boy's Neon Fluorescent Orange Rainbow Swim Trunks Size 12Opens in a new window or tabBrand New$61.00or Best OfferFree delivery
- Nike 6.0 Board Shorts Boys 18 Swim Trunks Geometric SuitOpens in a new window or tabPre-Owned$15.88or Best Offer+$7.88 deliveryExtra 20% off with coupon
- Hurley Boys’ Swim Wear Set Rash Guard and Swim Trunks Size 10/12Opens in a new window or tabPre-Owned$15.00or Best Offer+$8.24 delivery
- Sunuva Boys Floatsuit Navy Stripes Shrimp 8 FloatiesOpens in a new window or tabNew (Other)$24.95Buy It NowFree delivery
- Cat And Jack Long Sleeve Rash Guard Swim Shirt size 12/14Opens in a new window or tabBrand New$12.99or Best OfferFree deliverySave up to 25% when you buy more
- Hurley Boys Board Shorts Swimming Trunks Stretch Size 12 NWTOpens in a new window or tabBrand New$25.00or Best Offer+$5.80 delivery
From our popular brands
Based on number of views and purchases | Sponsored- Hanna Andersson boys swim trunks Space 150 / 12Opens in a new window or tabPre-Owned$8.00Buy It Now+$4.75 delivery
- Peter Millar Youth Boys Parrot Talk Swim Trunk 11-12 Blue Quick Dry PocketsOpens in a new window or tabPre-Owned$19.99or Best Offer+$6.55 delivery
- Boy's Youth Hurley One and Only Supersuede Board Shorts SwimOpens in a new window or tabBrand New$19.99Buy It NowFree delivery in 2 daysFree returnsSave up to 5% when you buy moreTop Rated Plus
- Size 12 Youth Crewcuts by jcrew boys navy blue, blue and green Fish swim trunksOpens in a new window or tabPre-Owned$12.95or Best Offer+$6.55 delivery
- Hanna Andersson boys swim trunks 150 / 12Opens in a new window or tabPre-Owned$14.00Buy It Now+$4.75 delivery
- Boys Black Hurley Black Rash Guard Swim Shirt Size Medium 10/12Opens in a new window or tabPre-Owned$7.61Was: $8.9515% offBuy It Now+$6.20 delivery
- Boy's Youth Volcom Teflon Board Shorts SwimOpens in a new window or tabBrand New$22.99Buy It NowFree delivery in 2 daysFree returnsTop Rated Plus
- New Sz27 12/14 Quicksilver Surfsilk Straight 17" Surfing Swim BoardshortsOpens in a new window or tabBrand New$24.00or Best Offer+$6.55 delivery
- One-Piece Children Swimsuits Kid Swimwear Boys Long Sleeve Sun Protection NewOpens in a new window or tabNew (Other)$26.99Was: $29.9910% offBuy It NowFree deliveryfrom China
- Original Penguin Swim Shorts Boys UPF 50 NEW with Tags Blue Multi Waves Size 12Opens in a new window or tabBrand New$8.00or Best Offer+$5.00 delivery
- Lot Of 2 J Crew Crew Cuts Boys Swim Trunks Size 12 Elastic Waist, Lined VGUCOpens in a new window or tabPre-Owned$26.00or Best Offer+$12.19 delivery
- Boys Swimsuits Mock Neck Swimwear Two Piece Bathing Suits Training Swim TopOpens in a new window or tabNew (Other)$9.97 to $17.95Was: $18.895% offBuy It NowFree delivery
- Boys HURLEY Shoreline Striped Board Shorts Swim Trunks Size 8 10 12 16 18 20Opens in a new window or tabBrand New$13.99Buy It Now+$7.35 delivery
- RS Surf, XL Boys Size 18 Swim Trunks. Brand New With TagsOpens in a new window or tabBrand New$6.60or Best Offer+$4.84 deliveryFree returnsLast one
- Crewcuts Swimwear Shorts Boy's Size 12 Floral UPF 50+Opens in a new window or tabBrand New$34.99or Best Offer+$6.55 delivery
- Crewcuts Boys Beach Trunks Starfish Print Blue Sz 12 NWTOpens in a new window or tabBrand New$20.00or Best Offer+$4.84 delivery
- NWT Brunotti Big Boys Navy Blue Crunotosy Mini Surf Shorts Size Boys 152/12YOpens in a new window or tabBrand New$20.00or Best Offer+$4.71 delivery
- Hurley Boy's Checkered Shark Boardshorts, Size 12/26Opens in a new window or tabPre-Owned$4.200 bids · Time left2d 4hor Best Offer+$6.00 deliveryFree returnsTop Rated Plus
- Art Class Multi-Color Striped Swim Trunk Shorts Boy's Size 12 HuskyOpens in a new window or tabBrand New$34.20Was: $57.0040% offor Best Offer+$4.65 delivery6 watchers
- Vans Vanphibian Shorts Boys Size 12 Black Beach Board SurfOpens in a new window or tabPre-Owned$8.77or Best Offer+$6.49 deliveryFree returnsTop Rated Plus
- NWT Banana Boat Boy's 2 Piece Rashguard And Swim Trunks Size 12Opens in a new window or tabBrand New$12.50Buy It Now+$5.50 delivery
- Lands End Youth 2-piece swim set Shorts and hoodie Boys size M 10/12Opens in a new window or tabBrand New$18.89Was: $20.9910% offor Best OfferFree delivery
- Art Class Boys Hybrid Swim Shorts Adj waist UPF Pockets Green Size 12 Husky NewOpens in a new window or tabBrand New$9.99Buy It Now+$4.84 deliveryFree returns
- Crewcuts Boys Swim Trunks Sz 12 NWTOpens in a new window or tabBrand New$15.000 bids · Time left6d$19.99Buy It Now+$4.99 delivery
- Art Class Boy's Size 12 Ebony Crown Swim Trunks UPF 50+ Blue GrayOpens in a new window or tabBrand New$10.95or Best OfferFree deliveryFree returnsSave up to 20% when you buy more
- Hurley Boardshorts Boys' 18/29 Drawstring Back Pocket Colorful Neon 9.5" InseamOpens in a new window or tabBrand New$22.99or Best Offer+$4.99 delivery
- Hurley Boys' Vibrant Neon Board shorts Swim Trunks size 12Opens in a new window or tabPre-Owned$13.00or Best Offer+$5.80 delivery
- Hanna Andersson Colorblock Swim Trunks Shorts Red Blue Yellow Boys SZ 150 US 12Opens in a new window or tabPre-Owned$24.990 bids · Time left4d 20h+$5.50 delivery in 2 daysFree returnsTop Rated Plus
- New Boardies Boys Floral Tropical Swim Trunks Shorts Size 11-12Opens in a new window or tabBrand New$29.00Buy It Now+$5.95 delivery
- 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 2-3 daysFree returnsSave up to 30% when you buy moreTop Rated Plus
- Patagonia $49 Kids Baggies Nylon Shorts 7" Lined Buckhorn Green Size L (12)Opens in a new window or tabBrand New$44.00or Best Offer+$5.89 deliveryExtra 23% off
- Boy’s Lined Swim Trunks Board Shorts Size 12 Surf Board Tropical Breeze OshKoshOpens in a new window or tabPre-Owned$5.95Buy It Now+$4.84 delivery
- Boys 2pcs Geometric Swimsuit Rash Guard Sets Long Sleeve Shirt Top with ShortsOpens in a new window or tabNew (Other)$6.96 to $15.32Was: $15.196% offBuy It NowFree deliverySave up to 12% when you buy more
- Nike Boys Swim Trunks Sz L , Sz 12, Neon Beach! Summer! Pool!Opens in a new window or tabPre-Owned$12.56or Best Offer+$6.57 delivery
- US Kids Boys Swimwear Sun Protection Swim Top Shorts Pool Party Swimsuit HolidayOpens in a new window or tabNew (Other)$11.27 to $23.77Was: $23.896% offBuy It NowFree deliverySave up to 10% when you buy more
- Hurley Youth Long Sleeve UPF 50+ Swim Top Black Size 10/12Opens in a new window or tabBrand New$9.95Buy It NowFree delivery
- Boy's Youth Volcom Modtech 4 Way Stretch Board Shorts Swim size 12 (26) newOpens in a new window or tabBrand New$17.99Buy It Now+$4.71 deliveryFree returnsExtra 20% off with couponTop Rated Plus
- NWT J Bailey Boutique Boys Board Shorts/Swim Size 12 Patchwork PlaidOpens in a new window or tabBrand New$29.99Buy It NowFree delivery
- NWT JOHNNIE-O $55 BOYS CARVE HALF ELASTIC SWIM SHORTS TRUNKS IN MARLIN SZ 12Opens in a new window or tabBrand New$19.99Buy It Now+$5.95 deliveryFree returnsLast oneTop Rated Plus
- NWT BOYS size 11-12 GREEN OMBRE SWIM TRUNKSOpens in a new window or tabBrand New$18.00Buy It NowFree delivery
- Patagonia boys swim trunks navy inner drawstring size 12Opens in a new window or tabPre-Owned$5.000 bids · Time left1d 14h+$5.50 delivery
- ABERCROMBIE KIDS LINED SWIM TRUNKS ABOVE THE KNEE BOY’S SIZE 11/12 Star Wars EUCOpens in a new window or tabPre-Owned$14.99Buy It Now+$4.99 deliveryExtra 10% off with coupon
- Lot Of 6 Boys Swim Trunks, Size M/LOpens in a new window or tabPre-Owned$15.99Buy It Now+$4.99 delivery
- Nike 6.0 Board Shorts Swim Trunks Youth Size 18 NWTOpens in a new window or tabBrand New$29.99or Best Offer+$6.49 delivery
- Psycho Bunny Boys Navy Blue Swim Shorts Size 10/12Opens in a new window or tabPre-Owned$15.99or Best Offer+$4.52 delivery
- Volcom Boys 12 Blue Ice Plaid Boardshorts Swim Surf Trunks Pocket Logo SpelloutOpens in a new window or tabPre-Owned$20.00or Best Offer+$7.35 deliveryFree returnsTop Rated Plus
- New Art Class Boys Size 12 Adjustable Waist Webbed Pockets UPF 50+ Swim ShortsOpens in a new window or tabBrand New$15.00or Best OfferFree delivery
- Speedo Boy's Swimsuit Jammer Begin to Swim Solid Sz 12Opens in a new window or tabBrand New$15.99Buy It Now+$4.84 delivery
- New! Boy's Under Armour Logo Swim Trunks Size Medium 10/12Opens in a new window or tabBrand New$29.95or Best Offer+$5.95 delivery
- Patagonia Baggies (Lot of 2) Boy Med 10 Swim Short Lined Trunks Size L (12)Opens in a new window or tabPre-Owned$39.95or Best Offer+$5.95 delivery
- New Polo Ralph Lauren Boy's Board Shorts Swim Suit - Size Medium (10 / 12)Opens in a new window or tabBrand New$19.95Buy It Now+$5.95 delivery
- Hurley Ombre Boardshorts Boys' 12/26Starfish Orange 8 " InseamOpens in a new window or tabBrand New$19.99Buy It Now+$4.52 delivery
- Art Class New Boy's Size 18 Lined Adjustable Waist UPF 50+ Swim Board ShortsOpens in a new window or tabBrand New$7.19Was: $7.9910% offor Best Offer+$4.95 deliveryFree returns
- NWT Salt Life Boys Performance Swim / Active Trunks Size Large 10/12Opens in a new window or tabBrand New$20.00or Best Offer+$4.84 deliveryLast one
- AVIATOR NATION BOYS SWIM TRUNKS Bathing Suit SHORTS Sz 12 Kids Black Brand NewOpens in a new window or tabBrand New$49.99Buy It Now+$4.84 delivery
- Beige Or Gold Converse swimming trunks for size 12-13 YOpens in a new window or tabNew (Other)$10.00or Best Offer+$8.84 delivery
- Items Per Page