99% Cotton, 1% Carbon Fibre. Design: Contrast. 345gsm. Fabric Technology: Bizflame Multi, Durable, Flame Resistant, Protection Against Contact Heat, Protection Against Convective Heat, Protection Against Radiant Heat. High-Vis, Protection Against Molten Metal Splash, Sew-On, Twin Needle Stitch, Wash Tape. No. of Pockets: 7. Pockets: Ruler Pocket, Knee Pad Pockets, Back, Flap Closure, Stud Fastening. Fastening: Adjustable Straps, Pull-On, Zip Fly. Conforms to Safety Standard: ASTM F1959/F1959M-12 ATPV 13.6 CAL/CM2 (HAF=82%), CE Certified, CE-CAT III, EN 1149-5, EN 13034 Type 6, EN 13034 Type PB, EN ISO 11611 Class 1 A1+A2, EN ISO 11612 A1+A2, B1, C1, E3, F1, EN ISO 20471 Class 2, IEC 61482-2 IEC 61482-1-1 Elim 13 CAL/CM², IEC 61482-2 IEC 61482-1-2 APC 1, UKCA. Sun Rating: UPF 40+. Ref: UTPW730