100% polyester, The BOA® Fit System is made from extremely durable, high-quality materials. BOA® allows you to dial in to a fast, effortless, precision fit.; The outer material is breathable and easily leads heat and moisture away from the foot for excellent comfort.; The outer material is made of durable polyester.; The toe caps are made from carbon fibre, a very light and tough material. The toe caps are exceptionally strong and resistant to both impact and pressure.; Midsole of XL EXTRALIGHT® EVA and sole of rubber with extreme slip resistance.; The sole is oil and petrol resistant.; ESD approved to EN IEC 61340-4-3: 2018 + EN 61340-5-1: 2016.; Stabilisation with MASCOT’s patented multi-function shank.