AIRLINE APPROVED CARRY-ON LUGGAGEThe WANDF Carry-On Backpack measures 18x13.5x8 inches, making it a perfect fit for the personal item size requirement of 18 x 14 x 8 inches for Spirit Airlines and Frontier Airlines. This allows you to place it under the seat to avoid oversize charges. Additionally, it is designed to open and fold 180 degrees like a suitcase, making it easy to pass through airport security quickly. WET POCKET & LAPTOP COMPARTMENTThe wet pocket for toiletries, made from high-density waterproof material, can help you store wet or damp items such as toothbrushes, razors, and shampoo bottles. The separate laptop compartment can accommodate laptops up to 17 inches, perfect for your work or study needs in companies and universities. MULTI-POCKETThe spacious main compartment features elastic straps, ideal for bulky items like shoes and clothes. The middle main pocket has various compartments for items such as books, pens, and headphones, providing easy and quick a