Adopted fine turns spring makes the mattress has certain hardness in the soffness, No mattrer what kind of sleeping posture, every part of body appressed the mattress closely, completely support the skin of every part. The design breath hole can be emante the super abundance of the moisture and quantity of heat of the body. Germproot makes the mattress always keeping clean and dry inerior and exerior, Insure that you can have a high quality sleeping and comfortable enjoyment.