The Brimson is manufactured with Repelaweave fabric and a Taurpalite bottom for maximum protection against the elements. The protective Gear Tech computer sleeve provides a safe haven for your laptop and lets you continue work on the go with peace of mind. On the outside of the pack, a stretch mesh pocket helps to keep a water bottle easily accessible, and out of the way as you rummage for books and other supplies. The Brimson's luxurious suspension system is comprised of a high density EVA foam shoulder harness and fully padded back panel. Gear Tech computer sleeve fits most 15.5" laptops.