What is a Saddle Bag and What do You Put In it
If you’ve ever had a bike ride end early because of a flat tire or minor mechanical problem, then you already know the importance of carrying a saddle bag with you on your bike rides. A saddle bag is a bag that is specifically designed to hang underneath the back of your bicycle seat. They come in a variety of sizes and styles so check for one that will fit comfortably on the back of your bike. Some people even have two different saddles bags, one for training rides and one for races.
At a minimum, that bag should have an inner tube, a patch kit, tire levers and a bicycle specific multi-tool in it. If you don’t know the size of your inner tube, check the sidewall of your tire for the size or ask your local bike shop which is best for your bike.