Depends on the material it's made from. Polyester and nylon can be repaired by using a piece of the same material about an inch larger than the tear. Simply coat the repair piece and the area around the hole with SilNet, apply the patch, and let it dry overnight on a flat surface or pressed between heavy books. Use wax paper to make sure the SilNet doesn't stick to other stuff like your books. Cuben fiber can easily be repaired with cuben fiber repair patches in the field. No sewing or extra go is necessary.