I use this product for printing D&D power cards in addition to other index-card formats. Heavy enough to resist bending and other usage damage but not so thick as to be unwieldy.
I come from a big family so have to send out LOTS of cards for birthdays anniversaries etc. This product is perfect for using with Hallmark Software and produces a high quality card.
We used it for making temporary sale signs for the plant nursery but it hasn't held up to rain or sprinklers very well. It was an experiment because we wanted something that was colorful and would catch the eye but needed something durable when wet too. It's not the qualify of the product that didn't work but the application.