ACtually the best thing for a tweed bag is Vectra. I have a white/gold tweed flap bag and the colors were a bit dirty when i got it so I cleaned them and they sprayed with Vectra and it looks perfect after many uses. you cna buy it on ebay...good for leather, silks, seude shoes, any delicate leather, will darken initially yhen when dry return the item to it's natural color. I ahve been using Vectra for over 15 years and it is the BEST!