Features: OOTDTY Soft rubber, can be folded. The rubber eye-mask is made-of rubber, which is foldable, easy to use, durable and practical. Multiple diameter rubber eye guards eye Durable in use. It applies to stereo microscope wide microscope eyepiece, and for 32-36mm eyepiece of the microscope and and other lens, etc. Specifications: Material: Rubber Size:Approx.3.6x3.6x2.3cm/1.41x1.41x0.9inch Size:Approx.3.6x3.6x1.8cm/1.41x1.41x0.7inch Color:Balck Package Includes: 2x Eye Shield Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.