Safety shoes altimeter s1 p src size 43. standard: en iso 20345: 2022. upper: perforated suede leather. exterior lining: breathable fabric. interior lining: sany-dry® 100% polyester, three-dimensional, breathable, absorbent and deabsorbent, anti-abrasion. insole: evanit with special mix of eva and nitrile, great comfort and variable thickness (12mm - 8mm - 3.8mm). thermoformed, anatomic, perforated and lined with very breathable fabric. antistatic thanks to a special treatment of the surface and to seams made with conductive threads. sole: double density polyurethane. toe cap: steel resistant to 200 j. anti-perforation insole: non-metallic apt plate - zero perforation. time: 11 mondopoint. plus: adjustable velcro closure. performance and technical plus: italian leather.