If you specifically need a tight fit or a loose fit, please compare the actual size of the laptop with the inner size of the case to make sure they are smaller than the inner size, the more similar, the better the fit. Basic Protection: As an inner shell, the outer layer is covered with polyester fabric, and the inner layer is filled with highly elastic EPE, which can prevent dust, dirt, debris, scratches, and prevent collision, vibration and squeezing when put into a backpack or suitcase. Front Pocket Storage: There are extra pockets on the front, with enough space to store documents, chargers, mouse cables, mobile phones, memory cards, external hard drives, pens, etc. Comes with a dedicated small case: a dedicated small case for power chargers and mouse boxes, which is portable and slim, and lightweight for daily use. Warm Tips: To choose the correct size you need, please read the following instructions in the product description carefully before ordering. Applicable sizes and models: Note the Sizes: 11 inches (not applicable to 11-inch tablets) [External dimensions]: 31.5*22.0*1.5cm [Internal dimensions]: 30.0*20.0*1.5cm 12.5 inches (not applicable to 12-inch Macbooks) [External dimensions]: 33.5*23.5*1.5cm [Internal dimensions]: 31.5*21.5*1.5cm 13 inches (Huawei, Xiaomi, and Apple 14 inches refer to 13 inches) [External dimensions]: 35.5*25.5*1.5cm [Internal dimensions]: 33.0*23.0*1.5cm 14 inches (screen diagonal 14 inches refer to 13 inches, Apple 16 Pro, Huawei D15) [External dimensions]: 37.0*26.0*1.5cm [Internal dimensions]: 35.5*24.5*1.5cm 15 inches (Macbook16 Pro choose this) [External dimensions]: 38.0*28.0*1.5cm [Internal dimensions]: 36.0*25.5*1.5cm 15.6 inches (15.6-inch gaming laptops refer to this) [External dimensions]: 40.5*31.5*1.5cm [Internal dimensions]: 38.5*28.0*1.5cm Description: [Only internal dimensions can be installed; thickness can be installed to about 2.5 cm).