Kare-san-suiis a Japanese traditional garden style. This style of traditional gardening does not use any water and instead uses only sand and rocks are used in order to express the view ofsan-sui(Japanese scenery of mountains and waters). Moss has been a great part of this expression style. KARESANSUI KIT is a kit that allows you to freely express and enjoy your original karesansui. The kit includes a Japanese traditional wooden box, FUJIGOKE, and other parts needed to build up a garden. * L size kit has two different types of moss. 220mm×100mm×30mm 2 type of freeze-dried moss Garden rock (lava harvested from Mt.Fuji) Traditional white sand Traditional wooden box The moss does not require watering.Please avoid direct sunlight.When not in immediate use, please store it in a cool and dark place.Each product is unique as it is a natural product.