Hand washing is recommended for the arc 4 life cervical traction neck pillow. Arc4life does not recommend that you wash this pillow (for example in a washing machine or submerge the pillow in water). It will cause a break down of the polyester fiber fill fibers- leading to a loss of cervical support in the pillow. If you do wish to wash the pillow, - you have to very good about drying the pillow afterwards.
The Best Way to Clean the Arc4life Pillow
First use a zippered dust cover on the pillow, then simply wash that zippered dust cover in the washing machine. That is the easiest thing.
A simple spot wash with water and ivory soap/any detergent is a better idea. Just let the pillow air dry afterwards. You can also simply take a wet (wrung out) wash cloth and wipe down the pillow, then let it air dry.