Oven shrinks are easy to use and ideal for kids badges, key fobs, fridge magnets and jewellery. To use simply draw or trace a design onto the plastic sheet then colour in your design using coloured pencils or felt pens. Once completed cut out your design and place in a domestic oven on a baking tray. Leave for approx. 3-4 minutes at gas mark one or 140°C. The design amazingly shrinks 7 times smaller whilst becoming 7 times thicker. Use with strip magnets and sticky fixers. Pack contains 20 sheets 300x207mm