The Giant Chess Game Mat by Uber Games is made of sturdy nylon with metal grommets in each corner. It also includes (4) metal stakes to secure your mat to the ground and (1) nylon carrying bag. Each square on the mat measures 32cm by 32cm . The total area used by the Giant Chess Mat measures 2.7m by 2.7m This nylon mat can be easily unrolled and set up and then rolled back up for easy storage. Great for outdoor and indoor play. This is a lightweight alternative to the Giant Chess Game Board and is perfect for use with a Giant Chess Game Pieces set. Giant Chess Game Pieces Set is sold separately.