room2move® Relaxed Fit. Arc-Resistant Button Waistband Closures. High Quality Brass Zipper with Nomex (FR) Zipper Tape. Flame Resistant Pocketing. Reinforced Back Pockets. Nomex (FR) Thread Used in All Garment Seams. Triple Needle Stitching. Fits Over Boots. Safety Orange Outside ID for High Visibility.