Good...love mine. Have them on three guns. Flip ups on both ends. Not terribly expensive either. Blizzard lenses on my .300 Win Mag. so you can see through. I'd put them on all my scopes if I had it to do again!
I have them on a couple scopes. I like them. Make sure you get the flip ups if you decide to use them. I like the protection from dust and moisture they provide. They may not be good looking on a scope but as long as they keep my scope clear, I don't care how they look.
__________________
" Lost Highway"
Life is a tale....full of sound and fury- Wm. Shakespear
You go to heaven for the climate and hell for the company- Mark Twain
The only difficulty I have with mine is that my scopeis mounted very low and the bolt handle catches the cover. I can use the objective side, just can't use the eyepiece end. I use 1/2 of a bikini cover to cover the eyepiece until I get to the stand.
__________________
Knowing what I'm supposed to do and being humble about it.