Polycryo Ground Sheet 220 x 110cm, 67g. Lighter compared to sheets of the same size. Easily cut with a utility knife. Popularly known as "Polycryo" among overseas ultralight hikers, it originated from using heat-shrink film for window glass. Ground sheets have been commercialized by various garage brands in recent years. For those seeking the lightest weight. *Some wrinkles and dust may be present from folding, so please refrain from purchasing if you are concerned about these issues.