It's a cute Eevee and Mix Ole deck shield! It's a protective bag that you put one card at a time to protect it from scratches! It's a 64-card set with 4 spare deck shields, so you can put one 60-card standard deck!
Check out my other Pokemon Japan Deck Shields, Card Sleeves, Deck Cases, Playmats, and Plushes! All in stock in the USA and ready to ship!