The 3WAY Briefcase arrives in Porter's "HEAT" material combination. The 3way refers to the options of carrying the bag: handles, shoulder straps, and a stowaway set of backpack straps. Varistor nylon, highly utilitarian nylon, makes up the majority of the bag, and tarpaulin details add ruggedness and durability throughout. The blend of fabrics has proven itself to withstand the harshest military applications, making the commute to the office feel like a breeze.