I've been buying this brand of undershirts for a very long time; my oldest son is 42 years old. This size, however, belongs to my 7 yr. old. grandson and so does this pack of A-Shirts! I've bought him this brand for most of his life, with absolutely no complaints. He has now outgrown size 4/5 and it was time to begin in the next size, which, right this second, is a tad big for him; however, that is not a problem. As usual, and because they are brand new, I will wash them in warm water on the regular cycle so they will shrink a bit. They will still leave him space to grow into them perfectly. After that first regular wash, I will forever wash them in cold water but I'll use the gentle wash and dry cycles. That way, no shrinkage takes place. These undershirts, whether they are A or T shirts, wash, dry and wear extremely well. They never lose their shape nor do they tear in any of the seams, as other brands have, in fact, ripped in the seam on the top of his shoulders. I certainly recommend these; they last for the entire time they fit him. I believe these are a very good buy.