26cm Giselle Mattress Latex King MattressesGiselle Mattress Latex King Mattresses Sleep in comfort with the 26cm Giselle Latex King Mattress. Featuring natural latex layers, body supporting foam, and a breathable design for pressure relief and restful nights." A latex mattress is a medium firm type of mattress made primarily from latex foam, which is derived either from natural latex (harvested from the sap of rubber trees) or from synthetic latex (a man made alternative). Some mattresses use