Marmot Notch Pack Extremely Durable 420d Oxford and 330d Dobby Weave Nylon Double Layered Bottom of Pack for Added Abrasion Resistance and Increased Durability Spacer Airmesh Back Panel and Shoulder Straps for Added Comfort and Breathability Zippered, Padded Laptop Sleeve Fits Most 17" Laptops Clipping Points with Reflective Tape