{"product_id":"50-optical-illusions","title":"50 Optical Illusions","description":"A set of 50 of the most amazing optical illusions ever created. Each card has a mind-boggling illusion on one side and an explanation of how it works on the other. Includes a \"revealer\" card to help check colours and take measurements to show that seeing really is believing.\u003cp\u003e\u003cstrong\u003eCards | 52 pages | Published October 2009\u003c\/strong\u003e\u003c\/p\u003e","brand":"Usborne Publishing Ltd","offers":[{"title":"Default Title","offer_id":63833451397469,"sku":"9781409507796","price":8.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/3459\/8749\/files\/9781409507796.jpg?v=1783519363","url":"https:\/\/www.thebookmark.ie\/products\/50-optical-illusions","provider":"The Bookmark ","version":"1.0","type":"link"}