What does carp sack mean?

carp sack meaning in Fishing Dictionary

a carp sack tend to be a specialised case designed to hold a carp within the liquid instead of a keepnet. These are typically made from a material this is certainly designed not to hurt any fish put in it. The sack is made to help in keeping fish calm by within the fishes mind and eyes. It is placed back in water, and is tethered towards bank