These cards are 4 1/4" x 5 1/2". You can't tell from the photos but all the corners are rounded. They are all the same on the inside (Happy Birthday. You're one in a minion). I am selling them as a set of 5. Each card is different on the front (see photos). I have to sell cards as a set because this site has a $10 minimum. However, you can buy any combination of cards you see in my shop. Just send me an e-mail at firstname.lastname@example.org. I can add a custom item to my shop for you as long as it meets the $10 minimum. I also have an offer--buy 4 cards, get the 5th free (least expensive card is free). The individual price of these cards is $3.00. I don't charge for shipping within the 48 continental United States. If you live outside of that area, please message me and I can give you an estimate on shipping costs. Thanks for shopping!