Our Giant Chess set is ideal for outdoor fun at events, parties or even in your own backyard. It is a fun & competitive game for all ages to enjoy. The Chess pieces are made from a strong and durable plastic that is UV protected and totally waterproof that can be left outside. Each piece is tough, durable yet lightweight. A great feature of our Giant Chess is that you can unscrew the base and fill it with sand so in a windy day they will hold there ground. Our Giant Chess mat was designed for ideal flow so that you can easily play Chess without difficulty. Each large square is 30cm x 30cm to make it easy to move around the mat and check all of your options for the next move. While our games are recommended for indoor and outdoor use please ensure you bring your games undercover to get the longevity out of them.