The MICRO-FRESH hanging moisture-absorbent bag uses calcium chloride desiccant particles, which can quickly absorb moisture and has a large moisture absorption capacity of up to 200%. It is easy to use, just hang it up and quickly take away the moisture troubles. A must-have for your home on rainy and humid days. The breathable packaging material of the hygroscopic bag uses a high-barrier film + an anti-leakage breathable film, and reduces the breathable area to avoid the risk of leakage, achieve scientific water collection, and last longer.