S3 Class Rugged Flex chukka height ankle boot with hydro oiled leather for water resistance. Padded textile tongue and collar for added comfort PU footbed for all day comfort Vibram outsole for grip, traction, SRC slip resistant, HRO heat resistant and flexibility with every step The G zero textile plate has anti-perforation properties which protects against penetration of sharp objects Ergonomically shaped Fibre Glass Toe protects against impact, keeps you comfortable and meets EN ISO20345:2012 standards MI Advice - these are a fantastic boot and a generous fit to allow thick socks, if you are unsure go down a size. For example the 9.5 is perfect for a size 10 foot. F702913 Detroit S3 Chukka Boot