Memory foam is unique in its tendency to expand and fluff up in warmer temperatures and then compress in cooler temperatures. This quality enables these pillows to be adjusted to either a normal soft pillow or a softer pillow. If you prefer a normal soft pillow for sleeping, just put our shredded foam pillows in the dryer on a low setting for a few minutes. If you prefer a softer pillow for sleeping, allow the pillow to compress down for that extra support you need. Unlike pillows with a down feather, down alternative, latex, foam, or synthetic fillings, our bed pillows won't go flat and will offer years of neck and back support. Each pillow comes with a washable cover.