Our thermals feature a 425gsm heavyweight waffle knit fabric that's custom made for us in Canada. The material is then cut and sewn in San Francisco, CA in the same factory where our jeans are made. The thermals also have a triple needle coverstitched never-sag collar that stays tight around the neck over extended wears. Made in USA.

Note: This thermal will shrink 1" in the chest and 2" in length upon their first hand-wash and hang-dry. Please size accordingly.