We tested this pillow for five weeks as a replacement for a memory foam pillow that had started to sleep hot. The first night was an adjustment, wool behaves differently than foam. It conforms but rebounds, it doesnt sink and stay sunk. Our neck took about three nights to get used to it.

Heat regulation is the standout. We tested it through a handful of hot nights and a cold snap, and the pillow adapted without us flipping it or cooling the room. Thats the wool doing its job, which is pulling moisture away and letting it evaporate. Side sleepers will get the most out of this, we think. Stomach sleepers might want to remove some fill.

$139 is real money for a pillow, but this is the kind of thing you keep for years rather than replace every 18 months. Wool resists dust mites naturally and doesnt develop odor the way foam does. If you sleep hot and have been bouncing between foam and down, give wool a shot.