Explore Scientific Shroud for 10 in. and 12 in. Truss Tube DOB. Helps block out extraneous exterior and reflected interior light for higher contrast views and image captures. Constructed of a lightweight and breathable Lycra/Spandex black fabric with elastic ends to help hold the shroud tight around the truss tubes. Specifications for Explore Scientific Shroud for 10 in. and 12 in. Dobsonian Truss Tube: Manufacturer: Explore Scientific Condition: New Package Contents: Explore Scientific Shroud for 10 in. and 12 in. Dobsonian Truss Tube Explore Scientific DOB1012SHR: Shroud for 10 in. and 12 in. Truss Tube DOB