A FIRM ORTHOPEDIC PILLOW to help restore the natural curve of the neck WATCH THE VIDEO FOR SIZING INSTRUCTIONS. This is a sized product. Sleeping on the wrong size pillow may increase neck pain YOUR BODY MAY NEED TIME TO ADJUST to using a corrective pillow. OVERUSE during the adjustment period may INCREASE YOUR NECK PAIN Made from firm non-allergenic and nontoxic molded foam; this is not a soft memory foam pillow FOM-130-LRG, Large Firm: 25.75 x 10.75 x 6. Includes zippered pillow cover.