Ralph Lauren Short Sleeve Shirt Checkered Pattern The fabric is thin and breathable, so I think it will be cool. I think it would look cool to wear it over a T-shirt with the buttons undone. Stored at home. No pets, no smokers. My son doesn't like clothes with buttons, so he only wore it once for an outing, and it has been stored in a drawer after washing. Please consider bidding, understanding that this is a child's used item and has been stored at home.