The Opticron 43mm BGA Binocular Rainguard is a protective one-piece plastic eyepiece cap designed to shield binocular eyepieces from rain, dust, dirt, and accidental damage. With a universal fit, it accommodates eyepieces with an outer diameter of up to 43mm. Made from durable polypropylene, it ensures long-lasting protection. The rainguard attaches to the binocular strap for added security, making it a reliable accessory for outdoor use. Lightweight at just 15g, its compact design measures 122x45x16mm, providing a practical and effective solution for keeping your optics safe in all conditions.