I'm very picky with my sleeping pillow for my head/neck. I've tried it all (mulberry silk-filled, polyester-filled, goose-down, memory foam, etc).  This pillow is memory-foam.  
First, this pillow is encased in a very soft white material, which is washable in the washing machine. Second, the pillow is quite solid, medium heavy and firm to the touch yet springs back to it's original shape fairly quickly; so this pillow holds it's shape.  Third, I've found it is comfortable to the neck and head -- I've slept on my back and on my side. It feels breathable and airy, although I did use a silk pillowcase. In summary, I would recommend this for sleepers who prefer a medium-firm pillow and who don't like dust/allergens.