Casper Hyperlite Sheets
"If you're the type of person who always needs to flip to the cool side of the pillow, then you'll love the Casper Hyperlite Sheets ($177-$262, originally $208-$308) — they are magnificent. My bedroom gets unseasonably hot in the middle of the night, and I normally wake up feeling as though I've slept in the Sahara. These sheets are kind of a game changer in that they really help keep me cool, but the material still feels cozy and inviting, which was important to me. Also, as a serious minimalist, I was worried about the design on the white sheets, but I've found it to be unobtrusive and even inviting. Plus, they're soft! Going into the summer months, trust me when I say these are the sheets worth buying." — India Yaffe, associate editor, Shop
If you want to read more, here is the Casper Hyperlite Sheets review.