... 2m,1.5m,1.8m,2.0m, Bamboo Charcoal Bed Mattress 1)Composition100% bamboo fiber2) Dimensionsfull,twin,queen,king3 ... -bacterium. Negative ion release natural fragrance to purify air. Far infrared ray promotes blood circulation and metabolism. ... polarized by the method Hartman, so that the bed is in position North Northeast, Without it mattering ... relaxed and pleasant rest. Bamboo Charcoal Bed Mattress