Time to get some Zipfit liners

[Tony Storaro]

The Zipfits may be warmer than the stock liners,

In my experience (RS 130) they aren't. But that does not bother me one bit as the difference is not day and night and the Zipfits provide way better fit and performance.

 

[Seldomski]

30 day pack out followed by foothold issues (unless super-tight) indicates a relatively loose shell.

How many days should it take for the stock/factory liner to pack out and require replacement? Assuming the boot shell is the proper size...