I used it twice as a test, but I haven't had many opportunities to use it. I haven't adjusted the amount of filling (pipes). There are no noticeable stains. Pillow, travel pillow, stiff neck, snoring, cervical spine stabilization, travel pillow, travel goods, portable pillow, travel pillow, a pillow made by a pillow maker, "Travel Pillow M size", business trip, washable pillow, low pillow, cool sensation, elastomer, washable, made in Japan, Emool