Made from a flame resistant duck canvas material that's 90% pima cotton and 10% 375 gram high tenacity nylon, these men's pants will keep you safe. Pima cotton is fine, soft, and strong, while the high tenacity nylon adds abrasion resistance and more strength. These materials form the duck canvas it's also been treated to make it water resistant. Add in cotton duck's natural breathability, and wind and snag resistance, and you've got one hardworking fabric. All stitching is done with 11 ounce aramid high tenacity flame resistant thread. Aramid fibers are fireproof and strong, so these cotton duck pants won't have any weak spots. Wolverine designed this flame resistant workwear so that all metal is thermally protected from your skin. In addition, the metal zipper also come with fireproof aramid tape for extra flame beating durability. Seven belt loops give you a comfortable fit. This flame resistant workwear comes with side cargo pockets that has flaps and snap closures. Standarda: HRC2. Arc Rating: ATPV 10 cal/cm2. NFPA 70E-2004, ASTMF 1506-2010a, et OSHA 29 CRF1910.269, CAN/GSB 155.20-2000, CAN/CGSB 155.22-97, EN ISO11611:2008, EN ISO11612:2008, EN ISO14116:2008. Material: Pima Cotton, Nylon.