As I crawled into bed last night around midnight, my wife commented on how warm my feet were compared to previous sessions – a testimony to these boots and their removable inners. I can see myself getting replacement inners as no doubt mine will be worn out soon with all the usage they are going to get!
I also noticed (on the item tag) that the boots use
Thinsulate as an insulating material which has excellent thermal properties.
Cheers
Dennis