.... For at least one to two weeks. I hung the bag for all of two weeks on the balcony and then to reduce the residual odor to an acceptable level with Duftsäckchen. The product is the quality of her quite well, the division makes sense, therefore, three stars. Perhaps Travelite should let me think to change China's production or use another material, because the chemical stench is truly unbearable when you unpack the product. So be careful if you want to use the product immediately.