I got the Color Sense 600 Thread Count Cotton CVC Sheet Set King Khaki and they are my new favorite sheets! They are cotton sheets but are soft and silky feeling which makes them cool while sleeping. Living in the South, cool sheets are wonderful! I love how wide the elastic on the bottom sheet is. It doesn't make putting the sheet on the mattress difficult yet it's almost impossible for the sheet to come off the mattress. After sleeping on the sheets, the bottom sheet doesn't even look like it has shifted. The elastic goes all the way around, not just on the corners. The sheets have a thickness that make them seem to be made of great quality. I would highly recommend the Color Sense 600 Thread Count Cotton CVC Sheet Set!