Stylish and Fun Swim Trunks for Boys Get ready for summer adventures with Member’s Mark Boys swim trunks, designed for both style and functionality. Whether your little one loves bold prints or classic solids, these swim trunks are crafted to keep up with his active lifestyle in and out of the water. Premium Features for Maximum Comfort These swim trunks are packed with thoughtful features, including a Velcro-secured back pocket, side hand pockets, and a soft, breathable liner. The perforated performance built-in liner for boys and mesh basket liner for toddlers provide maximum support during water activities.