What type of sheets do you use?

In my "other" jobs, I work with the public and often ask them the question of the day.
It can be interesting, not just to hear all the different responses, but to see their facial expressions when they're asked something totally unexpected. It's like throwing cold water on a sleeping person sometimes.
I also have met some local massage therapists and when I see them I'll ask them random things. We may all be massage therapists or body workers but we all have our own way of doing things.
So for any massage therapists reading this post, what type of massage sheets do you use, if any?
If you are a person that just enjoys receiving massages do you remember any sheets that you liked or disliked in particular?

Last night, I ordered flannel sheets (twin sized that are extra long). Usually, I like simple solid colors, but I saw some sheets with snowflakes on them and I thought it was fitting. It Is winter after all, even though today was the first day we've received snow in my area. Once I see them in person I'll let you know what I think.

Take Care.