Lifewit 17" Transformable Carry on Travel Backpack Larger Capacity Multifunctional Ligthweigth Rucksack with Laptop Compartment MATERIAL - Constructed of premium quality nylon that provides strengthened and long-lasting performance. Dimensions: 20.4 "(H) x 14" (L) x 6.8 "(W) LARGER CAPACITY - The Backpack features 2 main zipper compartments that include the laptop storage compartment, which utilizes anti-shock technology, and is able to house laptop computers of up to 17.3 inches in size. 6 inside pockets (Including 2 pen bag) to store miscellaneous necessities. 2 mesh side pockets that can hold water bottles or umbrellas. CONVERSION - Convert the laptop backpack for outdoor use in under a minute. Simply unzip, roll down, and buckle the cover layer into place to expose three front compartments to store frequently used miscellaneous necessities. Roll up the cover layer to form three hidden pockets to store valuable items. VENTILATION - Breathable padded honeycomb back panel design allows for extensive airflow around the spinal support of the backpack to generate maximum ventilation. TOUGHNESS - Heavy duty S-shaped shoulder straps provide lasting durability while enhances weight distribution to reduce fatigue of shoulder.