sonoro kate bamboo sheets bed sheet set - 100% pure organic viscose - 400tc bamboo 6 pieces - fit 18-20 inch deep pocket silk feel, cooling, anti-static, hypoallergenic (lake blue, king) sonoro kate 100% bamboo viscose fiber: bamboo sheets are made of 100% viscose made from bamboo without any other added ingredients, which is more natural and secure.bamboo sheets are ideal for those with sensitive skin.