Durable weather resistant 1680 Denier Fabric with Hi-Definition logo Embroidery * Large padded Laptop/ Tablet compartment holds up to 17.5 laptop size and middle storage for books * Opti-Aire Padded 3 inch + wide Adjustable Shoulder Straps with D rings and Sternum Strap for comfort with padded back wall * Tri compartment designed * Mobile Phone Pocket, MP3 Player Pocket, Earphone Porthole, Thumb Drive Pockets, 2 Side Holster Zippered Pockets, 2 Side Holster Mesh Pockets, and 2 Zippered External Front Pockets * Contour padded shoulder straps