If you specifically need a tight or loose fit, please compare the actual size of your laptop with the inner size of the case to ensure it is smaller than the inner size. The more similar it is, 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 high-elastic EPE, which can prevent dust, dirt, debris, scratches, and prevent collision, vibration, and squeezing when placed in 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 adapters and mouse boxes, which is portable and slim, and easy for daily use. Warm Tips: To choose the right size you need, please read the following instructions in the product carefully before ordering. Applicable Sizes and Models: Please note the sizes: 11 inches (not applicable to 11-inch tablets) [Outer dimensions]: 31.5*22.0*1.5cm [Inner dimensions]: 30.0*20.0*1.5cm 12.5 inches (not applicable to 12-inch Macbooks) [Outer dimensions]: 33.5*23.5*1.5cm [Inner dimensions]: 31.5*21.5*1.5cm 13 inches (Huawei, Xiaomi and Apple 14 inches refer to 13 inches) [Outer dimensions]: 35.5*25.5*1.5cm [Inner dimensions]: 33.0*23.0*1.5cm 14 inches (screen diagonal 14 inches refers to 13 inches, Apple 16 Pro, Huawei D15) [Outer dimensions]: 37.0*26.0*1.5cm [Inner dimensions]: 35.5*24.5*1.5cm 15 inches (Macbook16 Pro choose this) [Outer dimensions]: 38.0*28.0*1.5cm [Inner dimensions]: 36.0*25.5*1.5cm 15.6 inches (15.6-inch gaming laptops refer to this) [Outer dimensions]: 40.5*31.5*1.5cm [Inner dimensions]: 38.5*28.0*1.5cm [Only inner dimensions can be installed; thickness can be installed to about 2.5cm].