Omi Hemp Bed Pad Hemp has superior dissipation and thermal conductivity compared to other fibers such as cotton. In other words, hemp cloth and hemp wadding dissipate uncomfortable body heat and provide a comfortable cool feeling. Hemp materials are particularly suitable for Japan’s hot and humid climate. It is said that humans sweat two cups’ worth during the night while sleeping. When it comes to bedding, if you use it not only in the summer but all year round, you can sleep comfortably without being bothered by humidity.