Hoopla! Greetings 3D Laser Cut Pop-up Greeting Card -- Cool Cats (Box Set of 10 Cards & Envelopes) Set of ten laser cut, hand assembled, pop-up greeting cards, which are blank inside for your own message Cards fold completely flat for mailing in the included envelopes Outside: Dark blue exterior, with a laser cut tree and two cats Inside: Cream interior, with two blue cats perched in a cream tree Card size: 10 cm x 15 cm (3.9 in. x 5.9 in.)