Obviously, sandbags can help us defend against floods and solve other water spilling problems. But a sandbag usually is too heavy to transfer. So we just have to buy an empty bag and then fill it by ourselves?!
The answer is no. You just need to buy a new product called an inflatable flood sandless sandbag like this:
It is not just a common bag--we put absorb polymer in it. This amazing bag is just 500g before absorbing water--So light to transfer. And after absorbing, it can be almost 25KG heavy like this :
So you can see the big difference between this kind of sandbag and normal: