king mattress jingxun 10 inch innerspring mattress strong support pocket spring hybrid mattress pressure relief bed in a box medium firm king bed mattress,76" 80" 10" jingxun the mission of the jingxun brand is to make everyone who sleeps on the jingxun mattress feel happy. jingxun has always adhered to the customer first attitude and the people-oriented philosophy to create a better quality mattress, so that every customer buy the most cost-effective mattress at a reasonable price.