The Climarelle sleep system regulates the temperature of your sleeping environment due to scientific advances in materials developed for NASA. The Climarelle pillow will therefore provide you with the ultimate night's sleep. Climarelle is an astonishing thermo-regulating product designed for pillows that absorbs, stocks & actively releases body heat to ensure a balanced temperature whilst sleeping. Your body temperature does vary through the night & a variance of only 0.5 degrees will result in your sleeping pattern being broken. If temperature is higher than ideal, the phase change material PCM microcapsules, integrated within the soft liner, become fluid & provides a cooling effect, bringing the temperature back to the optimum. Please note, unfortunately we cannot deliver this item to the Channel Islands.