Features:

[40 Amiibo Compatible NFC Cards] This set of 40 NFC cards works for Switch Zelda Tears of the Kingdom. You can use each card once a day to unlock amazing rewards.

[Easy to Activate and Use] These NFC cards are easy to activate and use. Just go to the Switch setting and enable Amibo. Then scan the card over the right Joy-Con controller and enjoy the game.

[High-Quality and Durable Cards] These NFC cards are made of high-quality PVC material, which is waterproof, scratch-resistant and bend-resistant.They are firm and sturdy, and have beautiful pictures on them.

[Enhance Your Gaming Experience]These NFC cards will make your Zelda adventure more fun and exciting.You won’t have to waste time finding supplies or equipment, and you can focus on exploring the land and discovering its secrets.

They are firm cards that are about the size of card and have beautiful picture on them.  They are very easy to carry in the case which is about the size of a small wallet.  You have to activate Amibo on Switch setting and you can you each card once a day.  

Each card will give you a Chest with a random treasure inside and plenty of food and supplies.  It will make you Zelda adventure so much more fun since you won't have to waste so much time finding supplies like food, weapons and armor so you can focus on your exploration of the land.