A flat tire can end a ride quick, especially if you have no way to fix your flat. Items you should always carry with you while you're riding are a spare tube, pump, tire levers, and a patch kit. Patches are normally used in an emergency so you can get back to where you started.
We worked with 3M® to produce a self adhesive tube patch that stretches, flexes, twists, and turns right along with the tube. No messy glue, no bulky packaging. Lightly roughen tube with the included sandpaper, clean, apply patch, and you’re ready to go.
This one and the Parktool VP-1 are the best puncture repair kits i have used. This one perhaps has an edge, since it just needs to be peeled off and stuck on the tube. Very easy to use and holds up well.