PUMA | CrossFit Low Urban Protect High Safety Shoes S3 HRO SRC | 643100URBAN LOOK WITH A TOUCH OF RETRO. Classic design elements combined with a modern cut. The striking CROSSTWIST LOW from the URBAN PROTECT line meets all the criteria of a sneaker style safety shoe. Technically, the sole construction with a precisely fitting last sets new standards. The special highlight of the 300 heat resistant rubber sole is the integrated rotation point. This point on the inner midfoot is subjected to the most stress during the