It depends on the item:
For our quote wall art, those are cut from 80lb cover stock. This makes the artwork delicate while still sturdy.
For the custom wall art, those are cut from 110lb shimmer cover stock which is just a bit thicker than the quote wall art.
For our stationery, we are still working on whether we will offer 80lb or something thicker. Samples are on their way to use now and you will be the first to know when we decide.