uvex 68287 uvex safety sandal S1, black/blue, size 35-52 General characteristics: extremely lightweight S1 safety sandal. Suitable for those who are allergic to chrome, as it is made of synthetic materials. All sole materials are free of silicones, plasticisers and other substances that prevent paint from becoming wet. Individually adjustable, double velcro, optimally adapted to the wearers needs. Protective features: new uvex i-PUREnrj sole technology with best cushioning properties in the forefoot and heel, good energy return (rebound) in the entire midfoot and optimum stability thanks to the foam heel cup.