I had purchased these same sheets approximately 9 years ago and I LOVED them so much! I understand that everyone has a different ida of what the perfect sheets are. And there are some pros & cons. The first sets I bought lasted a long time even with weekly washing in hot water & bleach. They became softer after each wash! The fabric is cotton with a 400 thread count. They sleep fairly cool which for me is a must! The corners are deep enough for my 12” mattress with room to spare! This set has elastic all around the edges which the previous ones did not. I haven’t actually tried them yet but will update after use. Being cotton they DO wrinkle a lot. Wrinkles don’t bother me but I know that others have a problem. The pillowcases are also a little different from the previous sets. Those had one side of the hem that wrapped up and around the end of the pillow that sort of held the case on. These are hemmed on both sides. I don’t think it’s a problem.At any rate, I’m happy overall as the fabric is soft, cool and fits the bed nicely. I’m expecting them to soften more as they are used!!I would not recommend if you want warmer sheets or instant softness. You might want microfiber or some with a little polyester mixed with cotton. However I think these are awesome for me!