Reflective Material:Plant reflection film using safe,healthy,environmental protection,high-quality PETP(Polyethylene terephthalate) material,PETP film has excellent solar radiation transmission performance..Effectively: Making efficient use of your lighting by reflecting light onto your plants, perfect for using in garden or greenhouse to increase plant growth..Widely Application: Reflective mylar is suitable for garden greenhouse,natural disasters,sports warm,outdoor survival and accidents cover the body..Easy to Store: Polyester film can be cut into different sizes and it comes in a separate package,easy to carry, foldable,easy to store,etc..What in Box: Set of 4 sheets, durable, puncture-resistant and tear-resistant.