New External Dimensions: 12.2" L * 7.8" W * 18.5" H Capacity: 30L Material: Waterproof Oxford Fabric Fit Laptop Size: 17.3 Inches or less Style: Travel, Business, College, Casual. 1 separate padded laptop compartment can fit up to 17.3 Inches Laptop and iPad as a laptop backpack. 1 front top compartment with 1 mesh pocket enough for books, mouse, and charger as a college backpack. 1 main compartment can hold your clothing and toiletries as a travel backpack for a 3-4 days short trips. 2 front bottom compartments and side pockets keep your keys, ID card, wallet, smart phone, water bottle, umbrella organized, and easier to find. 1 hidden anti theft pocket on the back protects your valuable items from thieves