The Magnum Classic CEN is ergonomically designed for out-of-the-box comfort, The extremely recognisable upper is manufactured from natural leather & hard-wearing nylon, A slip-resistant sole which features ladder grips & is also anti-static, acid & alkali resistant & insulated against both heat & cold, providing excellent comfort & protection in all weathers, The fast moisture wicking lining & removable/replaceable insole offer everyday comfort all day, 633g per boot (sample size), The Classic CEN is tested & certified to European Standard EN 20347 for occupational footwear with SRA slip resistance, Full certification: EN ISO 20347 OB E FO HI CI SRA, Also available is the sturdy full-grain leather Patrol CEN which retains many of the benefits of the Classic CEN but sits slightly lower, underneath the ankle,