Designed with a lightweight hover spring foam midsole for industry-leading underfoot comfort, flexibility, and durability, our radius men's work boots also feature an abrasion-resistant mesh upper and anatomically positioned flex grooves. Anti-fatigue technology polyurethane footbed for shock absorption and energy return• cement construction for flexibility• heat-, slip-, oil-, and abrasion-resistant, non-marking rubber outsoles• upper: mesh; lining: pu; sole: rubber• heel height: 2. 0 cm•safety standard : en iso 20345: 2011; safety rating: s1; safety features: p src e a fo. Colour: blue