I posted on social media a video of these sheets. I have a motion bed for years now. Every night the sheet would fall off. I purchased 2 of the One Sheets. The thick elastic all the way around, and then each corner has very sturdy elastic on each corner. Guess what? The sheets do not fall off ever. So I purchased two more, to be able to wash and have a set to put on. They wash amazingly. It is true, the more you wash, the softer they get. I have ben advertising these sheets, a video in on my Instagram and Facebook. I would never recommend sheets to all my friends if I wasn't so happy with them. I will donate my old sheets. The only sheets I will ever use is One Sheets. I thank you. When the sheet falls over in zero gravity, you wake up. Your sheets, One Sheets, do not fall off, not one time. They are the best sheets I have ever experienced, and June 9th I will be 70. That is a lot of sheets. I know what I am talking about.