PH PandaHall11x7.8” Heat Shrink Plastic Sheet, 15pcs Clear Frosted Shrinky Art Papers for Keychains Pendants Craft School Project Making

I was crafting a head piece for a costume - this worked perfectly.

While I have done many of these projects, each material is different and cooks at different lenths and temperatures. The sheets came in a clear baggie with no title or instructions of any kind.

How are you supposed to use these without instructions? They're useless without knowing what temperature to shrink them at, and for how long. Find something else that tells you how to use the product!