Its called a 'double slider' and I've been dying to make one ever since I saw the tutorial on SCS. The blank front slider panel is where you write your message. Here I've used the Wash Day Jumbo Wheel (retired) stamped on watercolour paper and coloured with the Watercolour Wonder crayons and Aqua Painter. The "Welcome Baby" is from Short & Sweet, the swirly background stamp is from Baroque Motifs, and "Markus" is done with the Newsprint Alphabet (retired). The colours are Sage Shadow, Creamy Caramel and Brocade Blue (another great colour wheel combo! - If you don't have one I highly recommend you get one!).