About 1/2 the thickness of "standard" ones but the worst thing is the smell [SEP] These are very thin & flimsy compared to what was on my glasses previously...  That would be OK & they would be serviceable if not for the strong smell they give off.  And have given off for the 2 days they've been on.  It's a strong chemical smell & is of course right near your nose:)<br />I won't be using these, will spend 2X their price or so & get usable ones.