Only retail-packaged, 100% authentic original Nillkin products. It has a barcode, QR code, and anti-fake membrane. To make yourself happier, get real products instead of cheap fake "Nillkin" ones from third-party stores. Frosted Nillkin Bumper Laptop Sleeve 13.3-inch laptop sleeve bags are compatible with the new Apple MacBook Air 13-inch 2024 model. A 15.4-inch laptop sleeve bag can be used with the new Apple MacBook Air 15-inch 2024 model. Before buying, please make sure the file is compatible! This product does not support all 16" laptops. Product-files/17966/compatibility%20with%20laptops.pdf https://nillkin.org/image/data Bumper Frosted Laptop Sleeve, basic yet intimidating, with a sleek and durable exterior; Without being overt, the back's frosted semi-transparent design displays the original device's aesthetic; made from a combination of TPU and PU leather, with ultra-fiber added.