SAFETY FOOTWEAR PUNCTURE-RESISTANT MIDSOLE MATERIALS An anti-penetration midsole protects the shoes and feet against the penetration of sharp objects such as nails, screws, and glass. It’s embedded between the footbed and outsole of puncture-resistant footwear. Steel • The most traditional choice. Thin and budget-friendly, but not flexible. • Made from coated steel or stainless steel • Not metal-free • Conducts heat, cold, and electricity • Additional marking P Non-Woven • A flexible material. Thinner than anti-puncture textile. • Made from non-metallic fibers • Metal free • Does not conduct heat or cold • Additional marking PL or PS Anti-Puncture Textile • The lightest and most flexible material, but more expensive than steel and non woven midsoles. • Made from aramid fibers • Metal free • Does not conduct cold, heat, and electricity • Additional marking PL or PS 79
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