This grade of Tyvek® has a more paper like feel and is very smooth on both sides - does not drape. Tyvek® (high-density spun-bonded polyethylene) is resistant to tearing, mould, dust particles and water. It is inert, neutral, gas permeable, thermally stable, non-abrasive and durable. It is strong, is easily cut, sewn, taped or heat sealed. It is useful for storage of many types of  heritage collection items and can be made into sleeves or protective covers etc. 75 g/m2, 180 micron.