Features (bamboo charcoal):1) Bamboo charcoal is made of hairy bamboo growing in the mountains of South Eastern China at least 5 years old using state-of-art manufacturing technology2) Bamboo charcoal is a truly 100% environmentally friendly products, it's greatto the environment as well as our health3) In Japan, the bamboo charcoal is called 'Black Diamond' because of its magical effects4) Widely used in our daily lifeFeatures (charcoal pillows):1) Humidity adjusting, air ionization refreshing powers, stimulate blood circulation, improve metabolism and reduce fatigue inside the body2) It has prominent effects on sour shoulders, pain in the waist, pain in the neck spine, pain in the joints, arthritis, insomnia and difficult in breathing producing area:China payment:T/T, L/C at sight