Ariat Flame Resistant Bootcut stretch jeans. I believe these are the M4 but I do not remember 100%. They are a stretch denim. Size and material tag is gone but I did include the size chart from Ariat as well as the measurements I took. These measure a size 35 waist and 32 length. Relaxed stretch bootcut. CAT 2 rated. Great pre-owned condition. Work Wear. Welding. Farming. Mechanics. Racing.