PRODUCT DESCRIPTION Simply the ultimate scope lens protection for hunters and shooters. They're custom-fit to your scope, create a watertight, airtight seal, and open with a touch of your thumbs, so you can put your shot through the narrow window of opportunity in the most extreme conditions. Features: - Fast, flip-open design - keep 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 -40°F - Truly ambidextrous - Weigh less than an ounce - Also made for spotting scopes - Size: 19 FROM THE MANUFACTURER Simply the ultimate scope lens protection for hunters and shooters. They're 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 the narrow window of opportunity in the most extreme conditions.