Thank you for viewing. This is a shell cover made by Sanwa Supply, compatible with the MacBook Air 13.3-inch (M1, 2020 model). It's a thin hard cover that protects the surface and back of your computer from scratches and dirt, allowing you to protect your MacBook without compromising its slim design. The material is thin and lightweight PP. It feels less bulky when attached and is ideal for carrying around. The bottom has four non-slip parts for stable use. It's also designed not to block USB ports or the headphone jack. This shell cover has a stylish carbon fiber pattern design, combining practicality and design. It has been lightly cleaned and disinfected with alcohol. This is a used item and is sold as-is. Everything included is shown in the photos. Please check the photos carefully and understand the condition. It will be carefully packaged and shipped.