Whether you are a professional scientist, an avid bird watcher, or a casual , these rubber eyepiece covers are a must-have accessory for your optical devices. They provide a comfortable and protective barrier for your eyes, ensuring that you can enjoy a clear and unobstructed view. The covers are designed to fit a variety of optical devices, making them a versatile and practical addition to your equipment. Features -Color:Black -Material:Rubber -Size:5.50X3.50X2.00cm/2.16X1.38X0.79in -Size:3.00X3.00X0.10cm/1.18X1.18X0.04in -Universal compatibility: suitable for single and double telescopes, birdwatching scopes, making them a versatile accessory -Comfortable experience: the rubber material offers a soft and comfortable touch, reducing eye strain during extended viewing sessions - construction: made from rubber, these eyepiece covers are built to last, ensuring longterm durability -installation: the elastic rubber make these covers easy to install and remove, saving you time - : compact and lightweight, these eyepiece covers are easy to carry, making them ideal for travel and outdoor activities Package list: 4 x Microscope Eyepiece Covers