{"product_id":"colour-changing-liquid-crystal-bookmark-25c-to-30c","title":"Colour Changing Liquid Crystal Bookmark 25C To 30C","description":"Touch this bookmark and watch it change colour with the warmth of your hand. The warmth of your hand and ambient (room) temperature causes the liquid crystals encased in the bookmark to refract light differently depending on the temperature. Soothing but great fun! Overall size 40mm x 150mm. The Colour Change change can be pale or stronger in shade depending on ambient temperature. The activities appeal to the immediate sensations: warm fingers produce colour changes, rubbing hands together produces heat. See our Store for more colour changing products.\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eThe warmth of your hand causes a colour change\u003c\/li\u003e\n\u003cli\u003eGreat for relaxation, toy or just a bookmark\u003c\/li\u003e\n\u003cli\u003eSmart Materials Changing Coating\u003c\/li\u003e\n\u003cli\u003eSafe, Non-Toxic - Overall size 40mm x 150mm\u003c\/li\u003e\n\u003cli\u003eExplore the science of liquid crystal\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STUCK FOR","offers":[{"title":"Default Title","offer_id":33278033159,"sku":"LD-T1OH-OXKY","price":3.62,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1088\/5372\/products\/LCColourChangingBookmark_b6a8526a-13e5-4699-87c8-547dbedb00b7.jpg?v=1588849116","url":"https:\/\/colourchanging.co.uk\/products\/colour-changing-liquid-crystal-bookmark-25c-to-30c","provider":"Good Life Innovations Ltd (Colour Changing) ","version":"1.0","type":"link"}