It reacts to water and expands in about 3 minutes (except for 725), so there is no need to pack it with soil.
It has a string attached so it can be connected together.
Flood prevention measures.
Prevents water from entering houses, etc. Material/Finish: Nonwoven fabric (anti-slip/natural rubber), water-absorbent polymer
Caution: Not for use in saltwater.
Country of Origin: Japan
Order code: 399-0087
