I am always looking for high-quality bed sheets that look good, feel good, AND can STAY PUT on a mattress. It's hard to find any that fit all those criteria. I have a couple of sheet sets from Brooklinen that are very light and cool, but they're constantly coming loose everywhere and need to be re-tucked at the slightest movement. I have other sets that DO stay put, but the material is low quality and generally unpleasant and uncomfortable. As other reviewers have noted, these sheets are thick, which allows them to hug the mattress more tightly, meaning you're more likely to slip into a crisper feeling bed at night. I will admit they aren't as soft as Brooklinen or other competing brands, but I don't find them uncomfortable at all. In addition, I tend to sleep hot. I was worried that the thickness would make these heavier and I'd wake up in a pool of my own sweat in the middle of the night, but that hasn't been the case. Yes, they are heavier, but they don't run hot. Again, other sheet sets are probably a little cooler, but I think the high-quality material of these sheets allows them to breathe, so I -- a very hot sleeper -- sleep just fine with them. Looking forward to wearing out my other brand sheets so I could get more of these in different colors!