These sleeves are made of thin PP plastic 0.06mm, one side of the sleeves are heart shaped holographic and the other side of the sleeve is clear plastic, the 58x89mm size are already suitable for the BTS/BlackPink .etc Kpop Photo Cards, the 61x88mm size are good for the KPOP cards as well, and it can also fit YGO sized Japanese small sized cards. the 65x90mm size are good for the MTG/Pokemon Cards Standard Sized cards. Come and get these cute sleeves for your loved cards, they will look brilliant in your binder or playing with your friends.