Abercrombie & Fitch kids unisex crop sweat pants

printed side says North Eastern Athletic Department with a large Abercrombie embroidered through the words and a moose This is done in a faded worn look typical of the brand promoting casual preppy lifestyle clothes This is gently loved with elastic waist (and tie)and legs and is marked XL but fits S or XS adult -also see pix - it has a sewn loop on side that is slightly stretched with a pull or small hole when stretched with finger-I have no idea why Abercrombie put that in or what it is for ? see measurements for fit