Deep puddles of water, nails on the ground, falling objects, or slippery surfaces: with the S3 safety shoes, such as the Kastra, you’ll always have a firm footing and be optimally protected by the puncture-resistant steel midsole. Combined with the weather-resistant dryplexx® membrane and the robust steel toe cap, the Kastra offers your feet a worry-free solution in every respect. This also includes the ability to put them on and take them off extremely quickly, made possible by the practical twist closure.