Can't Find it ANYWERE!!

okay so I was wondering were I can buy trials tubes 2.5 wide…in america…cuz when I go on a roadtrip for unicycling I am gonna need another tube just to be on the safe side…and I couldn’t find them on so please any help would be much appreciated!

they dont sell 2.5 tubes…it will be a 20 or 19 whichever x3.0 daren bedford has them…10$ cad i think. i dont kno if anyone else has trials tubes. Bedford.