COTTON CRAFT Soft Cotton Thermal Blanket - Plush Herringbone Twill - All Season Luxurious Breathable Skin Friendly Lightweight Cooling Throw Blanket - Sofa Couch Travel Camping Dorm - King Grey

I can share what works for me - although I wish I could find something better. My approach? Get a "cheap" cotton blanket with a loose weave, and use that as a "sheet/blanket"combo. I have a ceiling fan to keep air moving through the loose weave, and that is enough to keep me from overheating. This is what I'm using: https://www.amazon.com/dp/B00QTMI40G?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_4&th=1 As I said, it isn't perfect - but simply the best thing I've found so far. My experience with other sheets has been similar to yours.