Semul Comfort Pillow White Grown in warmer climates and indigenous to India, Semul cotton has been a natural fill for pillows and mattresses for centuries. 100% organic and sustainable, with the Himeya Semul Pillow, we return time and again to Mother Nature for all she provides. Non-toxic, chemical free, hypoallergenic and antimicrobial resistant, Semul cotton repels moisture and protects against mold, mildew and allergens. Semul fibres are strong and long lasting, making them a dream to sleep on and easy to care for.