30L LARGE CAPACITY: This rolling laptop bag has multiple pockets, which can hold up to 15.6 inch laptop compartment, a main compartment for 2-3 days of clothing, a quick access pocket and water bottle pocket to keep your items organized | 4 SPINNING WHEELS: Detachable high-density silent rubber wheels allow this rolling briefcase to spin 360° or easy to carry-on, the wheels are bump-tested over long distances to maintain a smooth ride through the airport or into the office | ARPORT FRIENDLY: Measuring 16.5x12.6x7.5 inches, the rolling laptop bag with wheels meets airline size requirements for carry-on luggage either carried overhead or under the seat, making it ideal for both business trips and short trips | PREMIUM MATERIAL: This roller briefcase is made of water resistant and wear-resistant 1680D nylon fabric, which has stood the test of time, modern and stylish zippers, with high-grade leather trim in both powerful and stylish functions | TELESCOPIC HANDLE: The handle of this rolling computer bag is made of sturdy aluminum alloy material, which can be easily extended and folded. The luggage strap on the back could attach to the luggage trolley bar for comfortable traveling