This is an original product from Osugiya (futon egg box). Perfect for summer. Hemp is the coolest fiber of natural fibers, making it the perfect material for hot and humid seasons. The 100% hemp outer material will not stick even if you sweat. It will always keep you feeling refreshed. This product is relatively gentle to the touch of hemp, so it is recommended for women and those who dont like strong crisp feeling. Also, there are elastic bands on the four corners to prevent slipping. Can also be used as a bed pad.