These were so popular at comic conventions I've decided to add them to the online shop as well. Mystery packs could include anything - prints, doodles, booklets, stickers, postcards, pins, etc.! They are usually good value for money. 
 
There are three sizes available. 
 
Small: Contains 3 - 4 products
Medium: Contains 4 - 6 products
Large: Contains 5 - 7 products