What sets the ePac™ apart from the other laptop backpacks is its patent-pending side-loading laptop compartment. This exclusive compartment for your laptop has 4 foam padded walls and a super thick 2" foam floor to protect your laptop in case of a vertical drop. Luxurious comfort is provided by the combination of S-shaped shoulder straps working in tandem with a heavily padded Air-Mesh foam backside with a unique Velvet covered lumbar support. The importance of a comfortable backpack can not be stressed enough, as students are carrying more and more books, it is imperative that the backpack be very comfortable. The ePac™, with all its features, will deliver a supreme level of comfort.