BOSSMen's Stretch Cotton 3 Pack Boxer Briefs

Do they sit at the waist?

My boyfriend is a size 30/31 around the waist. Will the smaill fit him? Yhe usual store brands like Hanes run too big!

Are these hugo boss men's boxer briefs? the picture looks different and the description is unclear whether these are actually as stated?

Is there a seam in the back?