Enjoy your best night of sleep yet when you have the Stack Pillow hybrid thermoregulating pillow. With a fluffy yet supportive design, it’s great for people who take healthy sleep seriously. Its adjustable design literally stacks different premium materials in the head and neck area. This means every part of your neck and head gets the individual customized support it needs. Altogether, this results in a lasting, peaceful night’s sleep. Additionally, with a unique design, it actually suits every sleep style. If you prefer to curl up, spread out, sleep on your side, or sleep on your back, it adjusts to your unique support needs. Because no 2 people have identical head and neck structures, it works with 2 Mini-Pillow accessories to provide everyone with the appropriate support.