To clean follow manufacturer's directions if they are available. Otherwise, soak in cool water, then wash in warm suds by hand. Use a bathtub or large sink. Then wash by pushing down on pillow, releasing and pushing down again. Rinse the same way.
Pillows can be machine-washed on gentle cycle with lukewarm water plus detergent.
Rinse well in lukewarm water. Gently squeeze or spin out excess water. Blot with towels. Dry away from heat and sunlight. Pillows may dry very slowly in air.