Boys' trunks swim & rash guards

J.Crew's got items like boys' trunks for any day, anywhere, anytime. Shop til you smile at J.Crew. Check out our filters for additional options like brand, color, material, and much more. Make it unique. We have many colors to choose from, so go and get those trunks you've always wanted. Shop J.Crew.com for best-selling, of-the-moment boys' trunks you'll love right now and for years to come. Curious about J.Crew Credit Card rewards? Learn more and get more at j.crew.com. Gain access to a few of our favorite things: free alterations, birthday surprises, and exclusive offers. Get double points for every dollar spent at J.Crew. Plus, free shipping!