hi.its defo more than 3oz..i have a cobra.an enfield and best of the lot for hot days is a cobra with properf front.the comp weight is easily as heavy as the steerhide that aero used on my h/hide highwayman..the properf would be great for oz..wish i had mine wen i was last in geelong.peterIs it 3oz or heavier? I like the jackets but I don't need a heavy one. I know Vanson do a 2.5 oz Firenze leather too but these are harder to get .