The Allen Company Stretchable Double Scope Cover, fitting scopes up to 40mm, provides a quick installation design to completely cover the ocular and objective lenses of your scope. Able to be removed in seconds, with pulling one of the convenient tabs, this scope cover also fits red dots as well as compact and tactical scopes. System is designed for use in the field when conditions warrant to cover your scope and is stretchable up to 13-inches in length.