Breathable as Saran wrap, hot as the sun.This review is a year after use. The smell went away, which was great. The sheets feel silky to the touch. I bought them because I sleep hot and it says breathable and cooling. They are neither. I ended up sleeping on top of the sheets for the last few months because no matter how cold the room was I would wake up sweating. For the love of everything, don't buy these. Update: 5/20 - Sheets developed two holes. Not from punctures. Just normal wear. I don't know if a year of use is all they are supposed to last but I purchased these in July of last year. Just opened the sheets. Going to update after washing. The sheets smell terrible! Not like chemicals (which I would understand) but like sewage. Which is really concerning. Also the brand name is Brookside not Haleburg on the box. Correct color, size and type though. Not as big of a deal. Just a little suspicious so far. Will update later tonight with more information.