So these sheets have 100x more airflow than traditional sheets!!! Holy cannoli!!! They feel like an under armour shirt or material (silky like) which I love. The sheets themselves have a little stretch which is cool and the secure stretch band make these things fit on ANY size mattress. I own the Vertex mattress protector and sleep on a Solar 3.0 pillow. When I got these sheets I stopped sweating at night. If you’re a sweater like I am, you have GOT to get these sheets!!!