I have had the Memory Foam Bamboo Pillow for several years, while a great pillow I found for the hot nights it got very warm and would awaken with my hair wet from sweat. The Hybrid Bamboo Pillow while more expensive I decided to take a chance and purchase. I do not regret my decision, this pillow is super and does work. While the top of the pillow gets warm it cools and if you put your hand under the bottom of the pillow you can feel where the heat has been conducted downwards. The secret is not to cover with your own pillow case but use the four-sided bamboo case as this lets it breathe. Well worth the money.