... .02kg (before absorbing water) 20±2kgs(after absorbing water)Material:jute ,cotton, ... poducts.It can prevent water by water,which is very useful ... Efficient.It can absorb water compeletly in 3 to ... minutes when it meets water,and the bag inflates ... sandbag.2.Portable.Before absorbing water,the bag is small ... 0.07CBM for a box(with 40 pieces in it). ... and cotton can be mixed with soil,and then become ...