S1 safety shoes Innovative, high quality ESD footwear Extremely lightweight and stylish style uvex climazone technology for greater comfort Breathable high-tech micro suede Perforated shoe design for better ventilation Breathable distance mesh lining Can be used by people with chrome allergies as it is made of synthetic textile Elasticated laces for quick individual adjustment Steel toe bumper (Art. 6998.8 and 6989.8) uvex anti-twist heel stiffener for increased stability and better protection against ankle twisting Soft, cushioned perimeter around the ankle and tongue uvex 3D hydroflex foam insole provides exceptional energy absorption at the heel and under the forefoot.