I just purchased from Amazon (about $10.00) a set of lens cover for my Retrovid 10x40. They fit pretty good and the rubber/plastic cover is somewhat soft so I'm not sure how well they will hold up long term. They are: 32mm Binocular/Monocular Objective Lens Caps Internal Diameter 46.5-48mm Rubber Cover Set Black, 46-48LC.
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Objective Lens cover for Retrovid 10x40 (1 Viewer)
- Thread starter montynj1
- Start date
tenex
reality-based
I've been very satisfied with generic eyepiece covers (rainguards) bought on Amazon, though I had to reorder because the measurements listed online were too tight for practical use. They work nicely, the material doesn't feel cheap at all, and I expect them to last at least as long as Swarovski armor. 
