Safety boot for casting, mid-calf, electrically insulated, made of re-retardant relaxed leather, resistant to heat and contact with molten metal. Sewn with long-ber Kevlar® threads, which are resistant to heat and traction. The inner lining features Nomex technology, a ame-retardant and abrasion-resistant meta-aramid fabric, dubbed with a layer of Aersulate/Outlast®, a blanket with thermal insulation technology. It has a puncture-resistant aramid mounting insole and a removable SmartAir insole in PU. It has a composite toe cap, extended metatarsal protector. Bicomponent dual-density polyurethane (PU) sole with rubber, non-slip and resistant to the passage of electric current and heat by contact. Recommended for foundry environments, in services that present thermal risks (heat), risks of materials falling on the toes and metatarsals, risks of perforations and in low voltage electrical installations (up to 500 V) in a dry environment, standardizing and ensuring comfort and protection for the user’s feet.