Orion 15207 Scope Cloak 12-Inch to 16-Inch Dobsonians Orion's Scope Cloak keeps your Dobsonian reflector telescope assembled and ready for action in your shed, garage, or home observatory without fear of dust and dirt buildup Protect an assembled 12"-16" Dobsonian telescope in the field before, between, and after observing sesssions with the handy ScopeCloak Reflective cloak material helps avoid internal telescope heat build-up caused by exposure to sunlight Tear-resistant Scope Cloak fabric with waterproof lining helps prevent dew buildup from external moisture and dropping outdoor temperatures Designed for temporary outdoor use - not intended for permanent outdoor storage