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400g Insulation Boots Temperature Rating

23/03/2011 Extreme temperature lows and prolonged outside exposure without exerting yourself may necessitate the 1000G Thinsulate insulation.

This is not a standard level of insulation used specifically for situations involving intense cold.

Thinsulate also comes in 400G , 600G, 800G, 1200G and higher, for a diverse range of cold conditions.

First things first: watch out for those temperature ratings.

The warmth that one feels may depend on one#s metabolism, what one eats in the day, on one#s state of health, etc.

However, you can look for the number that appears next to the name of the insulation , this represents the weight of the insulation #, 400g insulation , rated to -40F/-40C: This range captures our more extreme winter boots.

You can find this heavier insulation in the Men’s Summit County boot and kids’ Lumi boot , as well as our winter work boot , the Men#s Davenport 6″ boot.

The insulation value of a snow/winter boot that contains Thinsulate is measured by the weight of the Thinsulate, in grams per square meter of insulation.

Thus, you’ll find boots with Thinsulate insulation that range from 100 gram insulation to 1000 gram insulation.

Thinsulate, a thin, lightweight insulating material, offers varying weights with different temperature ratings.

Factors such as thickness of insulation and the size and composition of the fibers contained within all play a role in how insulating a material can be, but when taking environmental factors into consideration, temperature ratings can.

the insulation in the fingertips.

Generally, use the following guidelines and adjust as needed: The best insulation for mild days: 80 to 100 grams of Thinsulate# is perfect for the average winter day above 20F (-6C) The best insulation for cold days: 100 to 200 grams will be best on cold days below 20F.


No matter what boots you decide on, you#ll want to pay close attention to the insulation rating if your main goal is to keep your feet warm.


WARM insulation is available from 100 to 400 grams, which translates to temperature ratings from -4F/-20C to -40F/-40C.

Boots with an insulated footbed, such as our Thermal Heat #, Basically, it’s insulation for your work boot.

Made up of a unique blend of microfibers, Thinsulate keeps your feet warm by blocking cold air molecules with its tiny threads.

The synthetic fibers absorb less than one percent of its weight in water.

Oboz doesn’t provide a temperature rating for these boots like many other manufacturers do, but it’s clear that they intend for them to keep your feet warm and dry no matter the weather.

While 400g of insulation is certainly a lot, it isn’t especially lofty or bulky, which helps to give these boots their more precise fit and feel.

400G Thinsulate Ultra Insulation.

Features a mesh liner layered over a waterproof membrane on the tongue to help regulate both moisture and temperature where it has the largest impact, on the top of your foot.

Designed to complement our boots and held to the same high quality standards.

400g insulation boots temperature rating