This item has been opened, but is unused. Size: 700 x 550mm This is a fire pit mat made by sewing 8-gou canvas to a 2mm thick felt-processed heat-resistant carbon sheet. The carbon sheet has an instantaneous heat resistance of 1350°C and continuous heat resistance of 250°C, protecting the field from fire. ＜Caution＞ Keep a distance of 10cm or more between the fire pit's charcoal bed and the mat. If you burn too much firewood, the temperature will become high, and the ground may not be protected even if the mat is placed. Therefore, keep a sufficient distance between the ground and the fire. Also, be aware that the canvas on the back may burn if the temperature exceeds the set temperature. Material: Carbon felt, canvas MADE IN JAPAN