This set of 4 blank cards comes with its own matching box. The box slides open like a matchbox and contains 4 similar cards with envelopes. The box will hold any cards of A2 size (4.25" X 5.5") so once the original supply is gone simply refill with more! This set makes a great gift for any stationary lovers. There is even space left in the box if you wanted to add a pen, stickers, or postage! Box and cards are made from heavy-weight cardstock (110 lb). This set features Easel Cards. This type of card is designed to display the front panel when it is tucked behind the thick element on the inside. Simply tuck the bottom of the front panel behind the strip on the inside of the card and the card front is now displayed along with the bottom inside of the card where you could write a personal message.