Class Club boys dress pants

Class Club boys tan dress pants, size 12. ***The button came off and I had to replace with a button I had on hand. It doesn’t match but his belt covered it so I just let him wear them. He grew out of them before I had time to find a matching button.*** PLEASE NOTE!!! Based on my son’s sizing, I feel these run small. He is just now in a 12 and these are very tight in his waist. He wore these when he was in a size 10.