LAPCO FR's flame-resistant 13oz. Denim jeans and bibs are made tough to handle the rigors of the job. These garments include tons of comfort and convenience features, while maintaining the standards of protection that you need. Comfort fit, with carpenter styling. Utility loop on left, utility pockets on right. Deep, reinforced front and back pockets. Heavy-duty belt loops. Non-conductive button closure. Sewn with Nomex® thread. Brass zipper with Nomex® tape.