This is a set of clear card cases and mask design stickers. Each set includes 10 cases and 10 stickers. You can use the balaclava stickers to cover the face on your driver's license or My Number card. I made a mistake with the lot size when I purchased these, and I have a lot left over, so I'm selling them. ■How to Use■ Place the sticker on the clear case, aligning it with the face photo. Please refer to the product images for details. *Please do not stick the stickers directly onto your driver's license, etc. *The card cases are made of a soft material and may be slightly warped. If you are concerned, please prepare a clear case sold at 100-yen shops, etc. I am listing only the number of items in stock, so if you need multiple sets, please use the bulk order option. *Please note that you cannot change the quantity after purchase.