Certainly not black out and the eyelets are made of a very thin and cheap looking material (plastic?!) but that’s not noticeable once they’re up. For the price, I wasn’t overly impressed. However, I paid someone to put the old blackout/thermal lining from our old curtains onto these as it made complete sense seeing as our old made to measure curtains were extremely good quality and it seemed a shame to waste them. It’s worked perfectly! It cost me an additional £45 for her to do this on top of the cost of these curtains but I’d say it’s worth it because now they are perfect! 
So just bare in mind that these are not blackout, they are light weight and the eyelets are pretty cheap.