YOUTH SWIM TRUNKS WITH LINER: The Chubbies swim trunks boys love with a lightweight, ultra-supportive, and breathable, anti-chafe liner keeping kids comfortable. All-day comfort and zero irritation from the water slide to the beach and everywhere in between. 4-WAY STRETCH FABRIC: Made from 92% polyester and 8% spandex, these beach shorts stretch in every direction and dry impossibly fast. Whether kids are swimming, surfing, or boogie boarding, they will never feel weighed down or restricted. SECURE FIT FOR ACTIVE KIDS: An elastic waistband and built-in adjustable drawstring keep these swimming trunks for boys in place from the pool to the all-you-can-eat buffet. No slipping, no adjusting, just nonstop fun wherever the weekend takes them. POCKETS BUILT FOR ADVENTURE: Two mesh side pockets drain water fast, while a back zipper pocket keeps small treasures secure all day long. Our boys swim suits are ready for every beach run, boardwalk stop, and fun in the sun. BEACH, POOL & BEYOND: Designed for snorkeling, swimming, beach sports, and boogie boarding, these swim trunks are machine washable and made to keep up with whatever your kids throw at them. Available in a wide range of bold fun prints and in sizes XS-XL. The Boys Swim Trunks Built for the Weekend Chubbies Classic Boys Lined Swim Trunks are the same best-selling swim trunk dads already love, now built for the next generation. These are not your average kids swim trunks, they are engineered for real movement, real fun, and real comfort from the moment they hit the water to the moment the beach nap hits. Built-In Liner That Actually Works The anti-chafe boxer brief liner is made from a lightweight 91% polyester and 9% spandex blend that is ultra-supportive and breathable. It moves with your kid, prevents irritation, and supports them whether swimming laps, catching waves, or cannonballing off the dock. Stretch Fabric That Keeps Up & Stays Put Constructed from a 4-way stretch of 92% polyester and 8% spandex blend, these boys swim bottoms flex and move in every direction. The ultra quick-dry shell means no soggy shorts dragging them down between activities so they can go from the pool to the snack bar without missing a beat. The elastic waistband and built-in adjustable drawstring keep their shorts securely in place all day, no matter how aggressive the water slide gets. If between sizes, size down for the best fit. Pockets for Every Treasure Two mesh side pockets provide drainage while keeping hands free, and a back zipper pocket secures the essentials or whatever your kid decides is worth saving. Best For: Swimming, Snorkeling, Beach Sports, Boogie Boarding. Machine Wash Cold, Tumble Dry Low.