The Emerald Buddha, a dark green statue, is in a standing form, about 66 centimetres tall, carved from a single jade stone. It is carved in the meditating posture in the style of the Lanna school of the northern Thailand. Except for the Thai King, no other person is allowed to touch the statue. The King changes the cloak around the statue three times a year, corresponding to the summer, winter, and rainy seasons, an important ritual performed to usher good fortune to the country during each season.