Parafilm is made from a blend of paraffin wax and polyolefin materials, which makes it soft, stretchable, and easy to wrap around irregular shapes. The film can stretch up to about 200% of its original length, allowing it to form a tight seal over glassware and other containers. The film provides an effective moistureresistant barrier and helps maintain the integrity of laboratory samples by reducing moisture loss and preventing external contamination. It is odorless, non-toxic, semi-transparent, and easy to handle, making it suitable for routine lab. use.