I hand-drawn this card to give to my coworker two years ago and posted a photo of it on social media. Many people love it and request to purchase them so here we are!
 
Size A2 (4.25x5.5")
Every card comes with a cream envelope
Printed on 100% cotton papers that are acid-free, museum-quality, and 285gsm in thickness. For your reference, your regular copy paper is 75gsm!