I used this to patch an unidentified leak in the sole of my shoe - worked a treat, and now my right foot stays dry in the rain! The shoes were old (but SO comfy!) and the soles had a few cracks in them, so I wasn't sure where to try and plug the leak. Shoe Goo is perfect for this as I just spread it on fairly thinly (I used a disposable plastic knife) like I was buttering a slice of toast, balanced the shoes upside down and left to dry overnight and ..voila! It dries into a thin rubbery clear hard gel - you would never notice it on the sole, particularly once you've worn the shoes once or twice. I am assuming it will wear over time so I will have to re-apply, but no big deal - loads left in the tube and only takes a minute or two. Tip top stuff - saved me £££ on new shoes (for now)!