How thick is the Endy Mattress? Administrator 12 July 2018 15:36 Updated Every size of our mattress is 10 inches in height. Related articles How much does the Endy weigh? Will I feel any motion transfer on the Endy? Can you tell me more about the foam in the Endy Mattress? What makes the Endy Mattress unique? Do you carry a Single or Double size Mattress?