This is due to the shortcomings of the other materials in terms of temperature, hygiene and lifespan. Firstly, 3D polyester has higher air and moisture permeability, which ensures an ideal sleeping temperature (as much as 2 degrees cooler). Secondly, 3D polyester stays fresher due to ventilation, but you can also wash and rinse it. Finally, we do not glue 3D polyester, so you can replace the layer separately for a longer lifespan. Moreover, 3D polyester is 100% recyclable.