Thank you. It's been my winter hat since 2003. Apparently it's indestructible.

You're welcome. That's a very good thing. Might I suggest you consider breeding it, so that it can pass on such sterling qualities to future generations of hats?

I'm trying to think how long my current flat-cap-with-concealable-earflaps has endured... maybe since 2006? (I wouldn't suggest it as a suitable match for your hat--I suspect tweed and fleece aren't interfertile.)