Internal metatarsal boot made with Poron XRD technology. Designed for comfort and to carry out the same tasks as a normal less flexible external metatarsal boot. Extreme impact protection PU/RUBBER Non metallic 200 Joule composite toe cap Composite Reinforced midsole protection Metatarsal impact protection Shock absorber heel Anti-static Heat resistant to 300°C Slip resistant Water resistant leather upper Waterproof membrane lining Breathable Thinsulate membrane lining Full length foam fabric footbed for excellent comfort Conforms to EN ISO 20345:2011 S3 WR M SRC HRO