Oh yeah...cork sealer. I have tired many differnt types of cork sealers and the best I have found to date is a product sold by Birkenstock (yep, the shoe makers). It goes on easily and last really well while protecting the cork. The only drawback to many of the cork sealers is that it makes them slighly darker which I personally don't mind, but others like the lighter colors on cork. The Birkenstocks Cork Sealer is very inexpensive too, I bought two jars of it at the Outlet Mall here in Nashville for $1.49 per jar. Not too shabby when it is sold to protect shoes that seel for an average of $150 per pair......