90 Days Warranty….. The Z835 has a professional-looking design with normal straight lines and squared-off edges; Toshiba Portege line of notebooks has typically been business oriented so this makes sense. The Z835 will most certainly draw wandering eyes despite its utilitarian appearance due to the sheer thinness it really is that thin at only 0.63 inches high. The chassis is constructed entirely of magnesium alloy, a lightweight yet strong material. As a result the Z835 feels like almost nothing at 2.4 pounds.