This stunning Slytherin house coaster would make the perfect gift idea for all lovers of the Harry Potter saga. Created with a lot attention to detail with an image of the emblem crest for the Hogwarts house of Slytherin on a green backdrop. This superb novelty coaster is made from high-quality cork and would make a stunning addition to any home placed on the kitchen or living room tables, kept by the bed or even on your office. This novelty coaster would make the perfect addition to an existing collection measuring H10cm x W10cm and is also part of our brilliant 4 for £9.99 offer. © Please do not copy text. Avena product description – Slytherin Official Harry Potter Coaster.