J.Crew Boys' star swim trunk J.Crew Boys' star swim trunk

Summertime, here they come... This swim trunk is made from quick-drying nylon and lined in comfortable, breathable mesh-which means he'll stay comfy in and out of the water. Nylon. Elastic waistband with tacked functional drawstring. Back patch pocket with button closure. Mesh lined. Machine wash. Import.

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J.Crew Boys' swim trunk in elephant print J.Crew Boys' swim trunk in elephant print

Spring break, here they come... This swim trunk is made from quick-drying nylon and lined in comfortable, breathable mesh-which means he'll stay comfy in and out of the water. Nylon. Elastic waistband with tacked functional drawstring. Slant pockets, back welt pockets. Mesh lined. Machine wash. Import.

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J.Crew Boys' snap-front board short in neon J.Crew Boys' snap-front board short in neon

Winter break, here they come... This swim trunk is made from quick-drying nylon and lined in comfortable, breathable mesh-which means he'll stay comfy in and out of the water. Nylon. Elastic waistband with tacked functional drawstring. Internal adjustable elastic waistband. Back patch pocket with button closure. Mesh lined. Machine wash. Import.

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J.Crew Boys' swim trunk in side stripe J.Crew Boys' swim trunk in side stripe

Spring break, here they come... This swim trunk is made from quick-drying nylon and lined in comfortable, breathable mesh-which means he'll stay comfy in and out of the water. Poly/elastane. Elastic waistband with tacked functional drawstring. Slant pockets, back welt pockets. Mesh lined. Machine wash. Import. Our colors really pop, but you can't tell just how vibrant some of them are until you see them in person.

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J.Crew Boys' short-sleeve colorblock rash guard J.Crew Boys' short-sleeve colorblock rash guard

Our supercool rash guards have a comfy fit and smart UPF 50 sun protection (think of it as SPF for clothes). Bonus: They're recommended by the Skin Cancer Foundation as an effective UV protectant, but we still suggest wearing them with sunblock for ultimate coverage. Nylon/poly/elastane body with nylon/spandex sleeves. With UPF 50 sun protection. Import.

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J.Crew Boys' short-sleeve Max the Monster rash guard J.Crew Boys' short-sleeve Max the Monster rash guard

Recommended by the Skin Cancer Foundation as an effective UV blocker, this second-skin rash guard provides UPF 50 sun protection-ideal when he's catching waves all day. Even better: We styled it just like his favorite T-shirt (with Max the Monster!), so he won't put up a fight when it's time to put it on. But remember, nothing is 100 percent effective against sunburn, so keep sunblock on as well. Nylon/spandex. This style features UPF 50 sun protection (think of it as sunscreen for your clothes). Machine wash. Import.

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J.Crew Boys' board short in mixed-up stripe J.Crew Boys' board short in mixed-up stripe

Spring break, here they come... This board short is made from quick-drying nylon and lined in comfortable, breathable mesh-which means he'll stay comfy in and out of the water. Nylon. Tacked functional drawstring and Velcro® closure. Internal adjustable elastic waistband. Slant pockets, back welt pockets. Mesh lined. Machine wash. Import.

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J.Crew Boys' magic swim trunk J.Crew Boys' magic swim trunk

Once these swim trunks hit the water, a hidden shark pattern will appear. Kinda like magic, no? Nylon. Elastic waistband with tacked functional drawstring. Back patch pocket with button closure. Mesh lined. Machine wash. After multiple washes, the pattern may not show up as well on the fabric. Import.

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J.Crew Boys' palm tree board short J.Crew Boys' palm tree board short

This swim trunk is made from quick-drying nylon and lined in comfortable, breathable mesh-which means he'll stay comfy in and out of the water. Nylon. Tacked functional drawstring and Velcro® closure. Internal adjustable elastic waistband. Back patch pocket with button closure. Mesh lined. Machine wash. Import.

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J.Crew Boys' SundekTM swim trunk J.Crew Boys' SundekTM swim trunk

Moms in the know will recognize the rainbow as the signature of Sundek, the iconic 1970s surf brand (today it's designed and produced by a company in Florence, Italy). Crafted in quick-dry nylon and triple-stitched for major durability, these miniature trunks come in some seriously dazzling colors. You'll love the easy-on-and-off snap closure; he'll love the Velcro® pocket in the back (perfect for stashing ice-cream money and beach finds). Nylon. Elastic waistband with tacked functional drawstring. Mesh lined. Slant pockets, back welt pockets. Machine wash. Import. Online only.

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J.Crew Boys' baseball rash guard J.Crew Boys' baseball rash guard

Recommended by the Skin Cancer Foundation as an effective UV blocker, this second-skin rash guard provides UPF 50 sun protection (think of it as SPF for clothes)-ideal when he's catching waves all day. Even better: We styled it with contrast-color sleeves (just like his favorite baseball tee), so he won't put up a fight when it's time to put it on. But remember, nothing is 100 percent effective against sunburn, so be sure to apply sunblock as well. Poly/elastane. With UPF 50 sun protection. Machine wash. Import.

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J.Crew Kids' Flight 001® Go Clean wet suit bag J.Crew Kids' Flight 001® Go Clean wet suit bag

Flight 001 is a jetsetter's go-to: Think one-stop shopping for all things travel (its stores are modeled after a plane's cabin and the brand strives to bring back the glamour of flying). These Go Clean bags are perfect for type-A travelers-this one is made from heavyweight water-resistant nylon and keeps wet swimsuits separate from everything else in the suitcase, so "just one last quick swim before we jet" can actually be a thing. 12 1/2"L x 16"W. Nylon. Import. Online only.

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J.Crew Boys' colorblock rash guard J.Crew Boys' colorblock rash guard

Recommended by the Skin Cancer Foundation as an effective UV blocker, this second-skin rash guard provides UPF 50 sun protection-ideal when he's catching waves all day. Even better: We styled it just like his favorite T-shirt, so he won't put up a fight when it's time to put it on. But remember: Nothing is 100 percent effective against sunburn, so keep sunblock on hand as well. Nylon/elastane. Machine wash. Import.

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J.Crew Boys' board short in tropical fish J.Crew Boys' board short in tropical fish

Spring break, here they come... This swim trunk is made from quick-drying nylon and lined in comfortable, breathable mesh-which means he'll stay comfy in and out of the water. Nylon. Tacked functional drawstring and Velcro® closure. Internal adjustable elastic waistband. Slant pockets, back welt pockets. Mesh lined. Machine wash. Import.

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