Questions about Incase Icon

You can find the complete compatibility list at https://www.apple.com/us-edu/shop/product/HLKY2ZM/A/incase-13-icon-sleeve-with-woolenex-for-macbook-air-and-macbook-pro. As far as I can see from this information, this case is unfortunately only intended for newer models.

Unfortunately not. This product is designed for screens up to 13 inches. Your Matebook is 13.9 inches.