Samsonite&reg; 17" Laptop Computer Business Case, Black 1680D Ballistic - Is a standard, even weave of durable nylon material originally specified by the Federal Government for military use. The term "denier" (D) refers to the size of the yarn used: the larger the denier, the bigger the yarn Carry On Sized - Luggage designed to fit in most airlines overhead compartments; may not conform to some airlines carry-on standards. Laptop compartment - Is a built-in padded compartment designed to carry your laptop computer and help protect it from shocks while traveling. Tablet Pocket - A compartment designed to store your tablet.