GameGenic’s Prime Sleeves are now also available in Japanese Size for popular card games like Yu-Gi-Oh! and Cardfight!!! Vanguard. The Japanese-sized Prime Sleeves provide premium protection and prevent the cards from bent corners, scratches, or damages. Because of their extra-high back-cover opacity, even in lighter colors, they are perfect for tournaments. They come in 12 different color variations with a great shuffle feel.