A PregoPillow SET includes 2 stackable foam pillows: 
--A smaller-sized pillow for the beginning stages of pregnancy
--A medium-sized pillow for mid-pregnancy
SIZE: 16" x 24"
 
About PregoPillows:
PregoPillows are made using high-density, industrial grade mattress foam that isprofessionally laser cut for precision for pregnant belly perfection. Each PregoPillow is lined in a cotton casing.
 
But are PregoPillows comfy? 
How great are they? We recovered our Gonstead bench in it. We had out 6'5'' 330lbs+ father-in-law not only sit and lay on it to get adjusted, but he has been known to take a nap on it.
The verdict: The big guy approves of it.
 
DURABILITY:
A washable, removable cover for each pregnancy pillow covers the cotton casing.
Removable covers are made from 100% cotton fabric, similar in thickness and density to a thin denim layer