Features: 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 and eye shields. Durable in use. Compatible with stereo microscope, wide angle microscope eyepiece, and for 32-36mm eyepiece of the microscope and telescope and other lenses. Specifications: Material: Rubber Size: Approx. 3.6 x 3.6 x 2.3 cm / 1.41 x 1.41 x 0.9 inch Size: Approx. 3.6 x 3.6 x 1.8 cm / 1.41 x 1.41 x 0.7 inch Color: Black Note: Please allow 1-2 cm errors due to manual measurement; ensure you are comfortable with this before ordering. Due to differences between monitor displays, the image may not reflect the actual color of the item. Thank you for your understanding. Package includes: 2 x Eye Shield