Due to its complex composition, we don't recommend washing an Ergoflex memory foam mattress. However our TENCEL outer cover can be removed and machine washed at 30° and line-dried or tumble dried on a low heat setting for optimum hygiene and comfort. If you're particulary concerned about liquid damage to your Ergoflex, we recommend the Ergoflex-LIFE or Ergoflex-LIFE TUNDRA mattress protectors, fully waterproof and breathable covers made from micro-fine TENCEL material and the only such products specifically designed to work with the Ergoflex mattress.