What is the woman buying?

Woman: Could you help me choose some long-sleeved shirts for my husband? He takes a size sixteen. It’s for his birthday, so I’d like to find something really nice.
Man: Would you be interested in these? They’re one-hundred percent cotton, and look how nice the details are. They’re on sale this week for just 25 dollars apiece. That’s a real bargain for shirts as nicely made as these.
Woman: They’re just right. That stitching around the cuffs and collars is very nice. I’ll take two of the gray ones.