The thickness matches ultra pros deck protector sleeves, but these are a lot more slick. you will not get any of your cards sticking together when you draw, so much so, that is is hard to hold them while putting them up in your deck box. These were never meant to stick at all, and the quality is out of this world. I would recommend these to anyone out there. I'm already planning on buying another set.
i like these protectors so far. the are sturdy and you can see both the front and back of the cards which is really nice. oh and be careful these are only for yu gi oh cards. my xyz monsters look good in these :p