Temperature: TempurPedic mattresses are temperature-sensitive and may feel firmer in colder temperatures. Try warming up the room or using a heated mattress pad to see if the mattress softens.
Weight: TempurPedic mattresses are designed to conform to the sleeper's body, and they may feel firmer to heavier individuals. If you are heavier than the average person, you may need a softer mattress.
Age: TempurPedic mattresses have a lifespan of about 10 years. If your mattress is older than this, it may have lost some of its softness. Consider replacing it with a new, softer model.
Defects: In rare cases, a TempurPedic mattress may have a manufacturing defect that makes it feel hard. If you suspect this is the case, contact TempurPedic customer service to discuss a replacement.