Anterior/Posterior Skull Block Uncovered Polyfoam. These high-density open-cell foam positioning blocks are both comfortable and supportive.
12"W x 10"L x 6-1/2"H Polyfoam
WARNING: This product can expose you to chemicals including DI(2-ETHYLHEXYL) PHTHALATE (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm.