100% Cotton. Fabric: Bizweld. Design: Plaid. 330gsm. Fabric Technology: Durable, Flame Resistant, Flame Retardant, Protection Against Radiant Heat, Splash Proof, Welding Protection. Pockets: Ruler Pocket, 1 Back Pocket, 1 Chest Pocket, Stud Fastening, Flap Closure, 2 Side Pockets. Brass Zip, Double Stitched Seams. Conforms to Safety Standard: ASTM F1959/F1959M-12 ATPV 11.2 CAL/CM2 (HAF = 80.4%), CE Certified, CE-CAT III, EN ISO 11611 Class 1 A1+A2, EN ISO 11612 A1+A2, B1, C1, E2, F1, IEC 61482-2 IEC 61482-1-1 Elim 8.3 CAL/CM², UKCA. Fastening: Adjustable, Buckle, Elasticated Straps. Strong. Sun Rating: UPF 40+. Ref: UTPW837