The Butler Creek Flip-Open Objective Lens Cover is designed to provide the ultimate protection for your scope. Made from durable polymer it offers a lightweight solution that weighs less than an ounce and is tested to withstand extreme conditions including temperatures as low as -40 degrees Fahrenheit. The custom-fit design creates a watertight and airtight seal ensuring your lens stays protected in harsh environments. Its innovative flip-open mechanism operates silently with a touch of your thumb allowing you to stay focused on your target without spooking game. The slip-on style ensures a secure fit for a tube diameter of 44.70mm and comes in size 23 with a sleek black finish. This lens cover is the perfect accessory for hunters and shooters who demand reliability and performance in every situation.