I had bought a bit of seal skin when it was available for rest and arrow plate but I'm running out . What do you guys use ??

Still using sealskin,have some left from many years ago

Velcro loop.

I have some material that I got probably 30 years ago. It was designed to wick oil to lubricant shafts and moving machinery parts. It came in a sheet and from Mcmaster Carr. Stuff works great and last for years as a rest material . Only real downside is it's white which I don't really mind.