SIENA : EN ISO 20345:2011 S3 SRC These sportive safety shoes are made in Waterproof Hypertex PUTEK fabric, a new concept with high abrasion resistance yarns, woven directly into the fabric, to obtain high tenacity textiles and very high scratch performance. If during laboratory tests an excellent fabric can resist to abrasion tests on average at 51 thousand cycles, HyperTex reach and exceeds 1 million. The results showed a resistance of HYPERTEX 6 times higher than Cordura 1000, commonly used for high performance products. PROMAX innerlining : breathable with high steaming permeability to improve comfort This S3 shoe is 100% metal free provided with a composite toe cap, antimagnetic and very light The 0 Perforation non-metallic antiperforation textile has a high flexibility and is very light. Zero Perofration sole agrees to new rules EN 12568:2010 . The insock COMFORT FRESH is anatomic, antistatic and breathable. The RUNING SOLE is Ultralight and ultraflexible PU double density - Oil resistant, antistatic and Antislip . (SRC value).