While you are on the site, in your browser find and click "Add to Home Screen" A CGN beaver app icon will then be created to your phone that is directly link to the site.
Note: This feature may not be available in some browsers.
The 10% Off for Multi-lens kits will end at the end of this month. It'll go down to 5% for Jan.
Regular sunglasses as per O.P., will go to 10% for Jan.
Hopefully, if you've been eyeing any of these, you'll jump on it soon.