Does the included pad block FIR?

We include different thick and thin multilayer protectors into the mats’ sets. 

They include combinations of synthetic and natural materials that make it waterproof, sweat absorbing, washable, yet breathable. 

All of them are completely permeable for FIR Rays, Magnetic Pulsed Fields (PEMF), and moderately permeable for Negative Ions.

These covers and pads are not well permeable for Photon Red Light. 

Also, some customers use the mats without covers for ions. You may put a cotton or bamboo towel instead if you need more ions.