Yeah... and repair parts (tub/tire at a min.), water, 1st aid kit, tools, protection from the weather and sun, GPS/Phone, helmet, food, sleeping gear, more water..... this is all of course for real "bike touring" - Bicycle touring means self-contained cycling trips for pleasure, adventure, and autonomy rather than sport, commuting, or exercise. Touring can range from single-to multi-day trips, even years. Do you need a tire patch kit to ride to the grocery store, probably not? Are you stupid if you don't have one when you ride to the grocery store? Yes. Do you need a GPS to ride 100 miles to a specific location? No, a map will do for a lot of people. Is a map necessary? Most people will admit they think so. All a GPS is, is an electronic map. Common sense. After this, it becomes about higher degrees of comfort and convenience -vs- weight. The use of electric assist allows for more comfort and convenience. Multi year rides are about living on the bike, that changes opinions on what is "absolutely" necessary.