With the combination of a BootWarmer Sock and Liner Sock you get the optimal comfort - this applies both on the fishing trip and during other outdoor activities.
The Liner sock ensures that condensation is quickly removed from the foot, so it remains dry and comfortable. The BootWarmer sock is the insulating layer that ensures that you stay warm.
If you have not yet tried the combination of using two socks, then you should treat yourself to trying it.
PS: If you tend to get blisters, the combination of two socks will also minimize the risk of it.