My headphones are like new again. Again!

My 13 year old Sony EarGuard PXC450 headphone cushions were dozing. These are the 2nd set. Sony donโ€™t sell replacements anymore. So I ordered a 3rd party set from Amazon. ๐Ÿ‘๐Ÿป See pics. Last picture shows my DIY Bluetooth conversion ๐Ÿ˜ฌ
Ordered spare cushions. Can I get 20 years usage out of them?ย 

The cushions on my Sony Headphone with the PCV flaking off
The old cushions with flaking PVC.
The new headphone cushions fitted
The new cushions. Good as new!
A BlueTooth adapter attached to my Headphones with Velcro
My BlueTooth DIY conversion!