... 24cm*24cm, 27cm*27cm, 30*30cm3.color: natural green , carbonized, colored4.packing:one into a pp bag, ... chosed 4-year-old mountain Mao bamboo, strong and natural eco-friendly.The bamboo are steamed & ... boilled in very high temperature to sterilize and degreasing. We use ultra violate light to disinfect . ... The mat is without chemical and safe to food.We have QC tomake sure ...