Feature:1. MEASURING SIZE: Please measure the outside diameter of the ocular lens outer tube diameter to get accurate sizing, if the diameter is between 42-45mm, thickness is 15mm, it will fit well. If the diameter is different, please choose a different size2. VARIOUS PROTECTING: These covers protect your lenses from rain, dust and scratches in any weather or environment. They also offer protecting to your lenses in transit and storage3. EASY TO REMOVE AND ADD: Place the rainguard cover on the ocular lens outer tubes to protect your lens. You can conveniently attach to your binocular strap to keep within easy access4. FLEXIBLE DESIGN: The quality one piece flexible binocular rainguard stretches for a tight fit. This ensures nice protecting for each ocular lens5. FIT MODELS: All the sizes we list allow you to find the correct size for all standard binoculars. Compatible models include 8x30, 10x30, 8x32, 10x32, 8x42, 10x42, 8x50, 10x50, 8x56 and 10x56 modelsSpecification:Item Type: Binocular Rainguard CoverMaterial: RubberSuitable Diameter: Approx. 42 ~ 45mm / 1.65 ~ 1.77in, Suitable Thickness: Approx. 15mm / 0.59in.Package List:1 x Eyepiece Cover