If you often "flip to the cool side," the MyPillow 2.0 features cooling fibers woven directly into the Giza cotton cover to dissipate heat.
Usually, if you wear a Small or Medium T-shirt, you're a White level; if you wear a Large or XL, you're likely a Green level.
🟢 For broader-shouldered women or average-to-large men (up to 6'1") who