Timberland Premium Prima Loft 400 Gram Leather Wheat Nubuck Boots Size 8.5W

Timberland Premium Prima Loft 400 Gram Leather Wheat Nubuck Boots Size 8.5W Style 10061 How warm is 400g PrimaLoft? 40 below zero Fahrenheit Most winter boot manufacturers claim that a 200g Thinsulate boot will keep you warm down to 20 below zero Fahrenheit, a 400g one will keep you warm down to 40 below zero Fahrenheit, and a 600g boot, down to 60 below zero Fahrenheit