There's more than one way.
I've used lots of different kinds of scope protectors that I've seen on forums. From them I've developed one that I now use.
Start with a piece of an old intertube and a couple zip strips. I use the zip strips that are reusable.

Cut it to fit tight between the rings and cut a U notch for the scope adjustment knob. Punch holes for the zip strips.

It's simple to make and is easy to take off the scope and wash.

Works for me anyway.
Art

That's a good idea. When you clean it... you need more zip ties?

Art good idea, you have any of that inner tube left over??? Grin

Nope, I just reuse these ones.
They have a release button on them.

excellent idea... then you could just wipe them off and put them back on. I like that idea. I never seen zip ties that could be released. I just buy them in bulk from Harbor Freight. They are very handy things to have around.

Great idea Flounder.

I haven't seen an inner tube around for quite some time. But a stop at a tire repair place with a pair of scissors would likely produce a piece of old tube with little trouble.

I often see old furniture out on trash day with heavy vinyl or leather upholstery. That would probably work also.

great idea i will try, but use velcro tie wraps instead they are completely flat and softer than nylon.

I have found the TC muzzleloader scope protector#7339 for about 10.00 works. good on 1in scopes without a side focus, made of leather and velcro fasteners .