Click Arc Flash Trousers are Fire Retardant, Anti-static, ARC Flash cargo style. 300gsm 60/40 Modacrylic/cotton blend. Inherently flame retardant. Flame retardant qualities will not diminish during life of garment. Triple stitch construction. Seven belt loop part elastic waistband, double button closure. Two hip pockets. Rear patch pocket with hook and loop closure flap. Large bellows pocket to each leg with hook and loop closure flap. Right leg mobile phone pocket with hook and loop closure flap. All pocket flaps with Retro-reflective tape feature. Internal knee pad pouches. Large qualifying icons on left leg pocket. Leg length: Small (S) - 29. Regular - 31". Tall (T) - 33". EN ISO 13688:2013 - General requirements for protective clothing. EN 1149-3:2004 - Anti Static - Test methods for measurements of charge decay. EN 1149-5:2008 - Anti Static - Material performance and design requirements. EN ISO 11611:2007 (Class 1 A1 A2) - Protective clothing for use in welding. EN ISO 11612:2008 (A1 A2 B1 C1) - Protection against heat and flame. ARC FLASH. IEC 61482-2:2009 - Performance requirements and design requirements. EN 61482-1-2:2007 (Class 1 = 4kA) - Box Arc testing. EN 61482-1-1:2009 (ATPV = 10.8 Cal/cm2) - Open Arc testing. Each garment style is independently tested to both box and open ARC standards. Click ARC production is covered by article 11B certification. Does NOT conform to EN ISO 20471."