Have used my sheets for a full week. I am so happy with them. Very soft and fit my king size split top Sleep Number bed perfectly. They were SO easy to put on. I just washed them today so hoping they will last at least a year. My expensive ($300-pillow cases not included!) Sleep Number sheets did not fare well. They tore at the split top juncture. I have made my own split top sheets, using a king size fitted sheet, cut it down the center 30" and added a colorful patterned fabric. Nice but want more variety. If these new sheets last a year, I will be happy.