Is there a physical store for the 8h mattress?

No, their mattress is designed with double-layer springs, that is, interlocking springs outside, which are mainly used to bear the weight and make the mattress have enough hardness. There is also an independent pocket spring on the inner surface of each chain spring to ensure the independence of the mattress. The spring in the spring inherits the respective advantages of the two kinds of springs. There is three centimeters of latex on the surface of the mattress, which is good for the skin.