I bought these to keep me warm during the winter months. I wear them on days I'm required to wear full FR clothing. I usually wear under armour brand to stay warm. These work pretty good. They are comfortable and fit under my pants well. I'm not sure why but they were a little bit itchy which is why I'm only giving 4 stars.
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National Safety Apparel Underwear: Men's U51FRSR Outlast FR Underpants
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