Patron Saint Flame Retardant Cargo Pants with 3M F/R Tape Fabric: 311gsm Cotton Drill 3M8935 F/R & Anti-static reflective tape. Comfort fit. Contains a large flap cargo pocket & tool and mobile phone pockets. Double flap pockets on back. Complies with International F/R standards: BS EN ISO 11612:2008 Protective Clothing to protect against heat & flame-Clause 6.3 ARC Thermal Protection Value - ATP Rating: 14 cal/Cm2 (Calories per cubic cm) Comply with ASTM F1959/F1959M-12 Standard. HRC:2 Comply with the Oeko-tex100 Certificate, safe to wear against skin. 50+ domestic washes 60 degrees celcius