i used to ride with a patch kit & 2 tire levers & on a multi day trips i would take patch kit, 2 spare tubes & spare tire. the spare tires i carried in those days since beaded foldable tires were not available i used an italian made foldable tire that at one time was called the raleigh corsa strada, this tire had a fiber glass bead that could be rolled into quite a compact size. now i carry on every ride what i used carry on only multi day trips. sometimes you will flat twice i one day & especially if it is raining it is a lot easier just to replace a tube & patch the tube it the evening. the reason you must carry at least 1 spare tube & not just a patch kit because on rare occasions (2 since 1975) that i could not get a patch to adhere. one half century i went on in may one of the riders was not carrying a patch kit & flatted twice during that ride. i was riding by when he was asking it anyone had a tube, i lent him one of mine.