The Graine Creative 540271 200x260mm Gold/Silver Magic Plastic (4-pack) is an amazing craft material that shrinks and hardens in the oven to create rigid, shiny pieces. The pack contains 4 shrink-wrapped plastic sheets measuring 200 x 260 mm in metallic gold and silver finishes. Simply draw, cut, and bake in a home oven for a few minutes to shrink the sheet up to 7 times its size, increasing its thickness. It's excellent for creating keychains, earrings, pendants, and metallic pins in craft activities with children from 6 years old and adults.