#10 Business Envelops with 'security tint' -- good quality--used for several years --despite experiencing the COST per box (500) almost 'doubling'. Not much 'going down' these days!
I have been buying these for a long time and they have consistently cut back on the quality. Now they have such a small amount of glue that more than half of them won't securely seal. I will not be buying them anymore.