If you specifically need a tight or loose fit, compare the actual size of your laptop to the inner size of the case to ensure it's smaller than the inner dimensions. The closer the match, 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: Features extra front pockets with ample space to store documents, chargers, mouse cables, cell phones, memory cards, external hard drives, pens, etc. Comes with a Dedicated Small Case: A dedicated small case for power adapters and mouse boxes, portable and slim, and convenient for daily use. Warm Tips: To choose the right size you need, please carefully read the following instructions in the product before ordering. Applicable Sizes and Models: Note the dimensions: 11 inches (not applicable for 11-inch tablets) [External Dimensions]: 31.5*22.0*1.5 cm [Internal Dimensions]: 30.0*20.0*1.5 cm 12.5 inches (not applicable for 12-inch Macbooks) [External Dimensions]: 33.5*23.5*1.5 cm [Internal Dimensions]: 31.5*21.5*1.5 cm 13 inches (Huawei, Xiaomi, and Apple 14-inch refer to 13-inch) [External Dimensions]: 35.5*25.5*1.5 cm [Internal Dimensions]: 33.0*23.0*1.5 cm 14 inches (14-inch screen diagonal refers to 13-inch, Apple 16 Pro, Huawei D15) [External Dimensions]: 37.0*26.0*1.5 cm [Internal Dimensions]: 35.5*24.5*1.5 cm 15 inches (Macbook 16 Pro choose this) [External Dimensions]: 38.0*28.0*1.5 cm [Internal Dimensions]: 36.0*25.5*1.5 cm 15.6 inches (15.6-inch gaming laptops refer to this) [External Dimensions]: 40.5*31.5*1.5 cm [Internal Dimensions]: 38.5*28.0*1.5 cm [Only inner dimensions can be installed; thickness can be installed up to approximately 2.5 cm].