J.Crew Logo
J.Crew Logo
  • New

    New

    Shop New Arrivals

    • For Women
    • For Men
    • For Girls
    • For Boys

    What to Shop Now

    • WOMEN
    • Best-dressed Guest
    • Olympia’s Picks
    • Work Remix
    • Linen Shop
    • Sun Shop
    • J.Crew Icons
    • Spring 2023 Lookbook
    • New Active Drop

     

    • MEN
    • Nautical-inspired Stripes
    • Linen Shop
    • Stock-up Shop
    • Spring 2023 Lookbook
    • Sun Shop
    • Secret Wash Shirts
    • Wallace & Barnes
  • Women

    Women

    Women

    • New Arrivals
    • Best Sellers
    • Top Rated
    • Brands We Love
    • The Re-Imagined Shop
    • Shop All
    • Sale

    Clothing

    • All Clothing
    • sweaters
    • shirts & tops
    • blazers
    • pants
    • t-shirts & tank tops
    • dresses & jumpsuits
    • swimwear
    • denim
    • coats & jackets
    • skirts
    • shorts
    • sweatshirts & sweatpants
    • active
    • pajamas & intimates
    • suiting
    • maternity

    Shoes

    • All Shoes
    • sandals
    • heels
    • flats
    • loafers
    • sneakers
    • New Balance
    • Birkenstocks

    Accessories

    • All Accessories
    • jewelry
    • bags
    • belts
    • hair
    • hats
    • scarves & wraps
    • socks & tights
    • candles, beauty, & home
  • Men

    Men

    Men

    • New Arrivals
    • Best Sellers
    • Top Rated
    • Brands We Love
    • The Re-Imagined Shop
    • Shop All
    • Sale

    Clothing

    • All Clothing
    • casual shirts
    • dress shirts
    • suits & tuxedos
    • blazers
    • shorts
    • pants & chinos
    • denim
    • polos & rugby
    • t-shirts
    • sweatshirts & sweatpants
    • sweaters
    • coats & jackets
    • pajamas & loungewear
    • swim
    • underwear & boxers

    Shoes & Sneakers

    • All Shoes & Sneakers
    • Dress Shoes
    • Sneakers
    • Boots

    Accessories

    • All Accessories
    • Socks
    • Belts
    • Hats
    • Bags & Wallets
    • Sunglasses & Eyewear
    • Candles, Grooming & Home
    • Watches & Jewelry
  • Girls

    Girls

    Girls

    • New Arrivals
    • Best Sellers
    • Top Rated
    • Brands We Love
    • Re-Imagined Shop
    • Shop All
    • Sale

    Clothing

    • All Clothing
    • dresses & Jumpsuits
    • tops & tees
    • shorts
    • skirts
    • leggings & pants
    • denim
    • swim & rash guards
    • pajamas
    • sweatshirts & sweatpants
    • sweaters
    • coats & jackets
    • baby

    Shoes & Sneakers

    • All Shoes & Sneakers

    Accessories

    • All Accessories
    • fun finds
    • back to school
  • Boys

    Boys

    Boys

    • New Arrivals
    • Best Sellers
    • Top Rated
    • Brands We Love
    • Re-Imagined Shop
    • Shop All
    • Sale

    Clothing

    • All Clothing
    • t-shirts & polos
    • shirts
    • suiting
    • shorts
    • chinos & pants
    • denim
    • swim & rash guards
    • active
    • sweatshirts & sweatpants
    • sweaters
    • coats & jackets
    • baby

    Shoes & sneakers

    • All Shoes & sneakers

    Accessories

    • All Accessories
  • Kids

    Kids

    Kids

    • Girls' New Arrivals
    • Girls' Best Sellers
    • Girls' Top Rated
    • Girls' Brands We Love
    • Girls' Re-Imagined Shop
    • Shop All Girls
    • Girls' Sale
    • Boys' New Arrivals
    • Boys' Best Sellers
    • Boys' Top Rated
    • Boys' Brands We Love
    • Boys' Re-Imagined Shop
    • Shop All Boys
    • Boys' Sale

    Girls

    • All Clothing
    • dresses & Jumpsuits
    • tops & tees
    • shorts
    • skirts
    • leggings & pants
    • denim
    • swim & rash guards
    • pajamas
    • sweatshirts & sweatpants
    • sweaters
    • coats & jackets
    • baby
    • All Accessories
    • fun finds
    • back to school
    • All Shoes & Sneakers

    Boys

    • All Clothing
    • t-shirts & polos
    • shirts
    • suiting
    • shorts
    • chinos & pants
    • denim
    • swim & rash guards
    • active
    • sweatshirts & sweatpants
    • sweaters
    • coats & jackets
    • baby
    • All Accessories
    • All Shoes & sneakers
  • Shoes

    Shoes

    Women

    • All Shoes
    • sandals
    • heels
    • flats
    • loafers
    • sneakers
    • New Balance
    • Birkenstocks

    Men

    • All Shoes & Sneakers
    • Dress Shoes
    • Sneakers
    • Boots

    Girls

    • All Shoes & Sneakers

    Boys

    • All Shoes & sneakers
  • Accessories

    Accessories

    Women

    • All Accessories
    • jewelry
    • bags
    • belts
    • hair
    • hats
    • scarves & wraps
    • socks & tights
    • candles, beauty, & home

    Men

    • All Accessories
    • Socks
    • Belts
    • Hats
    • Bags & Wallets
    • Sunglasses & Eyewear
    • Candles, Grooming & Home
    • Watches & Jewelry

    Girls

    • All Accessories
    • fun finds
    • back to school

    Boys

    • All Accessories
  • Swim

    Swim

    Swim
    Women’s swim

    • Shop all women’s swim
    • Tops
    • Bottoms
    • One-pieces
    • Rash guards
    • Cover-ups
    • Featured
    • Long-torso swim
    • Ruched swim
    • Cute cover-ups
    • Swim dresses

     
    Men’s swim

    • Shop all men’s swim
    • 6” trunks
    • 7” board shorts
    • 8” trunks

     
    Kid’s swim

    • Shop all girls’ swim
    • Girls’ one-pieces
    • Girls’ two-pieces
    • Girls’ rash guards
    • Girls’ cover-ups
    •  
    • Shop all boys’ swim
    • Boys’ trunks
    • Boys’ rash guards
  • Cashmere

    Cashmere

    Shop Cashmere

    • For Women
    • For Men
    • For Girls
    • For Boys
    • For Baby
  • Home

    Home

    Home

    • Shop All
    • New Arrivals
    • Brands We Love
    • Sale

    Shop Home

    • dining & entertainment
    • bedding & bath
    • candles & fragrance
    • decor & gifts
    • beauty & wellness
    • home office & tech
    • travel & gear
    • pets
  • Stories

    Stories

    Women’s Stories

    Men’s Stories

  • Sale

    Sale

    Sale

    • Shop Women's Sale
    • Shop Men's Sale
    • Shop Girls' Sale
    • Shop Boys' Sale
    • Shop Home Sale

    Women

    • Shop All
    • New to Sale
    • Over 60% Off

    Girls

    • Shop All
    • New to Sale
    • Over 60% Off

    Men

    • Shop All
    • New to Sale
    • Over 60% Off

    Boys

    • Shop All
    • New to Sale
    • Over 60% Off
  • Shopping Bag
      Subtotal:
      Checkout
      This Week's Offers
      Sale & Offers
      • Home

      • /
      • boys

      boys’ swim & rash guards
      Featured
      • Featured
      • Price: Low - High
      • Price: High - Low
      • Top Rated
      • New Arrival
      18 items

      Category

      Occasion

      Size

      • 2
      • 3
      • 4
      • 5
      • 6
      • 7
      • 8
      • 10
      • 12
      • 14
      • 16
      • XX-SMALL
      • X-SMALL
      • SMALL
      • MEDIUM
      • LARGE
      • X-LARGE
      • SMALL-MEDIUM
      • LARGE-XLARGE
      • K8
      • K9

      Color

      Pattern

      Discount

      Re-imagined

      • boys Boys' swim trunk with UPF 50+

        Boys' swim trunk with UPF 50+

        JPY 10,375
        select colors JPY 6,508
        • OXFORD ROYAL
        • BLUE
        • SWEET DAHLIA
        • BROOK BLUE CLOUD
        • UNION BLUE MEADOW
        • HAWAIIAN FLORAL YELLOW
        • + others
      • boys Boys' swim trunk with UPF 50+

        Boys' swim trunk with UPF 50+

        JPY 10,375
        select colors JPY 6,508
        • OXFORD ROYAL
        • BLUE
        • SWEET DAHLIA
        • BROOK BLUE CLOUD
        • UNION BLUE MEADOW
        • HAWAIIAN FLORAL YELLOW
        • + others
      • boys Boys' swim trunk with UPF 50+

        Boys' swim trunk with UPF 50+

        JPY 10,375
        select colors JPY 6,508
        • OXFORD ROYAL
        • BLUE
        • SWEET DAHLIA
        • BROOK BLUE CLOUD
        • UNION BLUE MEADOW
        • HAWAIIAN FLORAL YELLOW
        • + others
      • boys Boys' swim trunk with UPF 50+

        Boys' swim trunk with UPF 50+

        JPY 10,375
        select colors JPY 6,508
        • OXFORD ROYAL
        • BLUE
        • SWEET DAHLIA
        • BROOK BLUE CLOUD
        • UNION BLUE MEADOW
        • HAWAIIAN FLORAL YELLOW
        • + others
      • boys Boys' swim trunk with UPF 50+

        Boys' swim trunk with UPF 50+

        JPY 10,375
        select colors JPY 6,508
        • OXFORD ROYAL
        • BLUE
        • SWEET DAHLIA
        • BROOK BLUE CLOUD
        • UNION BLUE MEADOW
        • HAWAIIAN FLORAL YELLOW
        • + others
      • boys Boys' colorblock rash guard with UPF 50+

        Boys' colorblock rash guard with UPF 50+

        JPY 10,375
        select colors JPY 6,508
        • RED COMBO
        • NAVY COMBO
        • BLUE COMBO
      • Shop the look
        UPF 50+ swimour comfy fabric with built-in sun
        protection—but still, don’t forget the SPF!
        shop this look
      • boys Boys' colorblock rash guard with UPF 50+

        Boys' colorblock rash guard with UPF 50+

        JPY 10,375
        select colors JPY 6,508
        • RED COMBO
        • NAVY COMBO
        • BLUE COMBO
      • boys Boys' colorblock rash guard with UPF 50+

        Boys' colorblock rash guard with UPF 50+

        JPY 10,375
        select colors JPY 6,508
        • RED COMBO
        • NAVY COMBO
        • BLUE COMBO
      • boys Boys' swim trunk with UPF 50+

        Boys' swim trunk with UPF 50+

        JPY 10,375
        select colors JPY 6,131
        • GUARANA
        • UNION BLUE
        • SAIL BLUE

      Our range of boys' swim rash guards is as good as it gets. Classics, updated for today only at J.Crew. With a wide choice of colors, fabrics and fits, we've got what you're looking for at J.Crew. Picks for every style. With choices like trunks and board shorts, there's bound to be something just right for the occasion. What are people loving the most? Filter for trending boys' swim rash guards to find our best-selling styles and most-loved looks. Didn't find the product you're looking for? Search for boys' swimwear at J.Crew.com. Don't like it? Grabbed the wrong fit? Don't worry, we get it. Easily return and exchange at J.Crew.com. Check out our site to see if you're eligible.

      • @jcrew_help@jcrew_help
      • 1 434 385 57751 434 385 5775
      • Email UsEmail Us

      Help

      • Customer Service
      • Track Order
      • Returns & Exchanges
      • Shipping
      • International Orders
      • Contact Us

      Quick Links

      • Find a Store
      • Size Charts
      • Offers & Promotions
      • My Favorites

      About J.Crew

      • Our Story
      • Careers
      • Social Responsibility
      • California Transparency Act/Modern Slavery Act
      • Investor Relations
      • Terms of Use
      • Privacy Policy
      • California Do Not Sell My Personal Information
      • Diversity, Equity and Inclusion at J.Crew Group
      • instagram
      • facebook
      • twitter
      • linkedin
      • pinterest
      • youtube
      Japan
      madewellfactory
      © 2023 J.Crew

      like being first?

      Get can't-miss style news, before everybody else.