The 400R is a regular straight fit

which features a double twisted weft yarn

and after wash the denim becomes stiffer and tighter resulting in higher contrast fading

producing this type of double cloth is a complex process that requires weaving two separate sets of fabrics together

Made of heavy duty

Iron Heart IHTL-1301 Waffle Knit Long Sleeved Crew Neck Thermal Top - White footwear The 400R is a regularThis Iron Heart thermal is here to keep you nice and warm. Made of a soft, yet substantial 100% cotton waffle knit, these thermals are finished with 4 needle flat seam construction and chainstitch runoffs on the sleeves and hem.