Our Oleo-Mac professional chain-resistant trousers are approved to the following standards, EN340 and EN381-5: Class 1, Category 2 PPE, and are able to resist a chain speed of 20 m/sec. The Oleo-Mac trousers are practical with an Elasticated waistband fastening with 2 press studs, 2 front pockets and back pocket with zipper, braces buttons, 2 attachment rings, 2 belt loops, dorsal loop. Zipper with 2 sliders. LH leg pocket with Velcro closure. Elasticated bottom hem.