Reasons for the bargain: Because it's an odd length, 2.9m (actual size is about 2.96m). DuPont Tyvek Silver Breathable Waterproof Heat Reflective Sheet (New, Unused) Compared to regular Tyvek, it has higher breathability, waterproof, and heat reflective performance. Sold by the cut. It will be folded and shipped directly in an A4 envelope. Since it will be shipped folded, there will be wrinkles and creases. Price reduction is not possible. Thank you.