The Trillow™ comes to you in a zippered velour cover which for many people is the ideal way to use this pillow. The thicker side is 5.5" and the narrower side is 4.5" thick. The contour shape allows your head to rest well either on side or back sleeping positions.

The Trillow™ is made to be a 3 in 1 one pillow with another two pillows inside the first pillow.  If you feel like you would prefer a smaller pillow, unzip the outer cover and take the outer shell off of the pillow. When you remove the shell from the Trillow, you get a lower profile, meaning that if you are uncomfortable with a 6" thick contour pillow, you can now rest on either the 3" or the 4" side. This is often preferred while resting on your back or stomach.

You can also roll the outer shell to use as a neck roll (extra bolster pillow case sold separately).  This will give you two pillows, a bolster and a 4 inch thick contoured memory foam pillow.  You can lay the neck roll into the contoured section of the pillow to create a taller pillow, where your shoulders rest on the lower section of the pillow, neck on the rolled portion, and head on the higher portion of the pillow. You can also use the neck roll to be more comfortable while sitting in a recliner or chair.