I'm looking to get some covers for my 4-16x56 polar and ran across these. I have used a scope coat from day one but wanted to add these. Right now I have these bungee covers under the scopecoat but the lenses still get a little dusty. I saw where Tenebraex makes a set that threads into the optic on the front end but didnt see anything for the eye piece. Am i missing something? Or is there a better cover for my polar?