Bicycle Inner Tube Patches -

Pump some air into the tube. Listen for a hiss or feel for airflow. If you’re at home, submerge the tube in water; a stream of bubbles will pinpoint even the tiniest "slow leak."

These are essentially heavy-duty stickers. They are incredibly convenient and fast, but they are generally considered temporary. Over time, the adhesive can dry out or peel, so they are best used to get you home. Bicycle Inner Tube Patches

The cut is a long "snake bite" (two parallel slits caused by hitting a curb). The tube is already covered in more than 3–4 patches. Pump some air into the tube