99% Cotton, 1% Carbon Fibre. Design: Plain. 330gsm. Fastening: Button, Zip. Fabric Technology: Bizflame Pro, Durable. Belt Loops, Brass Zip, Protection Against Molten Metal Splash, Twin Needle Stitch. Pockets: Ruler Pocket, Back. Waistline: Elasticated. No. of Pockets: 4. 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, EU Standard, UKCA. Sun Rating: UPF 40+. Ref: UTPW589