Removing custom logo from Hoppers?

So I stumbled into 5 of the smaller hopper coolers from a friend who shut his business down. They were client gifts and he ordered them with his logo on the front. He doesn’t care what I do with them but would like to remove the logo without damaging the outer material so that I could put them on marketplace for him so he can recover some funds or potentially regift to others. Anyone know how logos are applied or can be easily removed?