VTG K-Brand Corduroy R-11 Refrigerant Outlawed Hat

This vintage corduroy hat has a rad logo. This refrigerant was outlawed in the US in the 90’s. Would make this hat lay 80’s or early 90’s. As you can see the foam is brittle. I would normally wash it. But due to the fact it’s a collector’s K-Brand hat. I will leave that up to the buyer. Let me know if you have any questions please. Thank you