Are The Pokemon Sleeves From Bundles Good?

hello! i just bought a bundle that came with Pokémon sleeves and was wondering if they are better than regular amazon sleeves?!

i’ve never seen anything like this before by the material it is as when i put a card in it, it kinda doesn’t show as much shine as the clear sleeves i usually buy on amazon, it feels like a good quality material and i was wondering if there is a difference??

should i start putting my special cards in these sleeves?