These eyepiece covers are designed to enhance the user experience by providing a comfortable and protective barrier for the eyes. They help to reduce eye strain and fatigue during extended periods of use, making them ideal for both casual and professional users. The covers also help to improve the overall viewing experience by blocking out unwanted light and glare. Features -Color:Black -Material:Rubber -Size:5.50X3.50X2.00cm/2.16X1.38X0.79in -Size:3.00X3.00X0.10cm/1.18X1.18X0.04in -Wide range of use: compatible with single and double telescopes, birdwatching scopes, making them a versatile accessory -Enhanced viewing comfort: the rubber material provides a soft and comfortable feel, improving your viewing experience - and reliable: constructed from rubber, these eyepiece covers are built to last, even with regular use -Userfriendly: the elastic nature of the rubber ensures easy and quick installation on your optical devices -Portable and lightweight: these eyepiece covers are easy to carry, making them ideal for travel and outdoor activities Package list: 2 x Microscope Eyepiece Covers