Made of 2.5 mm + 11 mm fine chigo. Bamboo is durable and has a natural cooling feel due to its heat conductivity. Carving process (machine cut and uneven like sculpture) on 11mm black dyed bamboo chigo, giving it a sense of dimensionality and luxury. Denim trim As it is carpet, denim fabric has been treated to resist fading. It also comes with a pis name to make it look like jeans. In addition, the inner material is made of 0.2 inch (5 mm) urethane for cushioning. Non-woven fabric backing is suitable for use on floors. Bamboo grows significantly faster (grown in 3-5 years) than other wood, sustainable and environmentally friendly materials.