They seemed to fit when they arrived (JL) 2 weeks ago, but this morning, I note (and so does he 
) his poloshirt is longer than his groin. I think it's the smallest size, too! The sleeves on his sweatshirt are maybe 3 or 4 inches too long as well, but that's less of a 'cool' issue than a polo that looks like a nightdress!
Fortunately, I only bought 2 polos so if there's a smaller size, I can buy 2 more in that. FYI, I got 2 because he also has 2 of his DB's old ones, but they are a tad 'yellow', not white, and a bit bobbly. They are exactly the same size but being from a different manufacturer, are actually shorter. BUT I don't like them cos the fabric is what my mother would call 'dabby' and the collars collapse quickly.
If it were a blazer, I'd expect some 'room to grow' esp if it cost, like my friend's son, (private), £107 but not maybe in a poloshirt!
I feel like a bad mummy!