The Butler Creek Flip-Open Scope Cover Size 39 Objective delivers the ultimate lens protection for hunters and shooters, offering a custom-fit, watertight seal that opens with a thumb touch so you can drop a precise shot through the narrow window of opportunity even in extreme conditions. Built for silence and speed, its fast flip-open design keeps your eye on the target, while silent spring hinges prevent game spookage. The water-tight, friction-mounted construction anchors securely to your scope, and the air-tight semi-O-ring keeps out dust and moisture, ensuring clear glass in challenging environments. Tested to -40F, this ambidextrous cover weighs less than an ounce and is manufactured in black from the Philippines, symbolizing durability and reliability for outdoor use. With the 39 objective specification, Butler Creek ensures a precise fit that maintains performance when weather shifts and urgency spikes, making it a practical enhancement for serious shooters who demand protection without sacrificing speed or stealth.