Different levels of softness are measured by the Thread Count in sheets. With each higher thread count, the weave of the sheet is tighter, making the sheet more smooth and soft. A thread count of 180 is the minimum most consumers look for in a comfortable sheet. Moving up to a 200 count sheet is usually not that much more costly and is really a softer sheet. The 820 thread count sheet is wonderfully soft and durable. Higher count sheets are also less likely to pill, or make those little round balls that are uncomfortable to sleep on.