does coldness ruin memory foam pillows?”
…it is temperature sensitive. The warmth of your body softens it, allowing it to soften where you lie. However, the reverse is true for many brands of memory foam. Cold temperatures will make it harden. Per http://www.healthyfoundations.com/pillows.html: “I’ve looked at a number of memory foam pillows, and they range from very firm and somewhat unyielding to overly soft and too squishy. The Healthy Foundations Memory Foam Neck Pillow hits the sweet spot – soft enough to be comfortable yet still dense enough to be supportive. The 4 lb. density foam used in our pillow is not as temperature sensitive as some other memory foams, which means that it generally retains its comfortable feel over a wide range of temperatures and won’t get hard below 70 degrees as some of the other memory foam pillows do.” As long as the temperature doesn’t go below freezing users report that their pillows do get hard in the cold but r
