Patching A Tube - Along with a spare tube, you should always carry a tube patch kit. Why? Because you might get a second flat and you don't want it to ruin your ride! This kit makes it easy to repair the tube, too. First, inflate it to find the hole (listen for the hiss). Mark the hole (tearing it slightly larger works well). Scuff the hole with the sandpaper in the kit. Apply glue (unless your kit uses glueless patches; it'll says so on the cover). Wait 5 minutes for the glue to dry. Peel the foil off the patch and apply it. Don't miss the hole! Before you reinstall the tube, check the tire and get that nasty sharp object out so you don't get a third flat (argh!).