... midsole 2.Security shoes for hard work 3.black full grain leather 4.Puncture resistant Black Security ShoesDetail Specifications ... S3Fuction: Puncture-Resistant, Anti-smashing , Anti-slip, Antistatic, Cut-Resistant, Oil-ResistantApplication: Construction, Mining, Steel industry, Chemical industry ... tough braided shoelaces let you tighten these boots for extreme support•Double layered cushioned insole ...