umm..you get a liquid for that..it is surely available in the sports shops where they write names on your tees in sports team or so...u can trustfully try dat..all d bst...:)
Try goo gone (comes in a bottle filled with yellowish colored liduid, can be found at: Walmart, target, wallgreens. To use: dump a little on to paper towel then rub on material) Or try hairspray (any type of hairspray works! To use: do the same thing as what you would do for goo gone) I hope this works! Try goo gone first