Going into the robe shop with his mother, Matthias looked at all the different robes then back at his mother. The woman went to where the black robes were and pulled them out and held them up to her son scrutinizing them. She would either shake her head or nod and put aside the ones she disliked. When she had gathered the ones she approved of, she nodded at him to go to the counter. Doing so, he helped his mother set the robes up to be packaged. "I'd like to purchase these Hogwarts robes, ma'am."