Our selection 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 what you were looking for? Search for boys' swim rash guards 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 what we can do for you.