Sportcoat or something else?

For my birthday in June, my grandparents gave me a gift certificate to a local clothing shop for the amount of "sportcoat." Seriously, that is what it said. I am not the "sportcoat" type so I hope they won't mind if I get something else instead. If I do get something else, do you think I will have to cross out the amount of "sportcoat" and write in "something else?"