Centek FS330 Unisex Leather Safety Boots in Black. These boots feature a water-resistant leather upper, a 200 Joules composite toe cap, and a penetration-resistant midsole. They are rated to EN ISO 20345:2011 S3 SRC. The design is lightweight and metal-free, offering composite toe cap and midsole protection. A bellows tongue keeps feet free from debris. The dual-density PU sole provides comfort and durability, and is resistant to oil, acids, and solvents. These boots meet the S3 Safety Standard. Please note: Safety Shoes are designed to be used with large, thick socks and are therefore larger than normal shoe sizes. If you normally wear a size 6 and do not intend to use thicker socks, it is recommended to order one size smaller. UK Size 11.