>>Simply the ultimate scope lens protection for hunters and shooters. They custom fit to your scope, create a watertight, airtight seal, and open with a touch of your thumb, so you can put your shot through a narrow window of opportunity in the most extreme conditions. >>Features: <>Fast, flip-open design keeps your eye on the target. <>Silent spring hinges won’t spook game. <>Water-tight, custom fit friction mounts anchor them to your scope. <>Air-tight semi-O-ring keeps out dust and moisture. <>Tested to -40deg F. <>Truly ambidextrous. <>Weighs less than an ounce.