99% Cotton, 1% Carbon Fibre. Design: Plain. 330gsm. Fabric Technology: Bizflame Pro, Durable, Protection Against Contact Heat, Protection Against Convective Heat, Protection Against Radiant Heat. No. of Pockets: 5. Pockets: Ruler Pocket, Back, Flap Closure, Chest. Brass Zip, Elasticated Straps, Protection Against Molten Metal Splash, Twin-Needle Seams. Conforms to Safety Standard: CE Certified, CE-CAT III, EN 1149-5, EN ISO 11611 Class 1 A1+A2, EN ISO 11612 A1+A2, B1, C1, E3, F1, UKCA. Strong. Sun Rating: UPF 40+. Ref: UTPW884