I have two of these and am about to purchase a third to keep in my gig bag for use on the stage. Light weight, very solid, and portable. I use it for my openback banjo. The cork is very grippy and after 3 years it has not harmed my precious banjo whatsoever. The cork itself has been marred slightly, from the brackets on my heavy banjo coming into contact with it, but I'm fine with that as long as my banjo is unharmed. When I first purchased this, I was wary of how long the cork would hold up. It is mixed with a rubber material, and it is highly durable. Recommended.