Specific shortcomings: First of all, the overall thickness of this bamboo charcoal brown mattress is only about 5- 10cm, which needs to be used with other mattresses to improve the supporting effect of the mattress. Secondly, bamboo charcoal mattresses should be aired frequently, because harmful gases are stored inside after bamboo charcoal adsorption and need to be released, otherwise it will become a warehouse of harmful gases.