Welcome to MyBinding video. This is Card Stock Binding Covers. They come in sizes ranging from 5.5" x 8.5" up to 11" x 17". You can choose to add a custom window to your covers or add rounded corners to your oversized coversheets. They come in one thickness of 75lb. Even select from 8 punch patterns to receive your pages prepunched. You can even print on the card stock covers. Just make sure your printer can handle the page thickness and there are several light colors to choose from. For more demos, reviews and how-to's, go to MyBinding.com.