How do I insert my glasses into the Keychain Case?

Here’s a helpful tip for using your keychain case:
To easily insert your glasses, align them properly and press the nose bridge into the slot in the case. You may need to click it in a couple of times—just like shown in the photo. With a bit of practice, you’ll see how smooth and simple it is to secure your glasses in the keychain case.

Here is a video demonstration on How to Use your Keychain Case.