Waterproof leather uppers - thanks to a fully waterproof membrane that is carefully sewn into the upper, the boot can be submerged to a point just below the ankle, ensuring your feet stay dry when working in wet conditions for extended periods Steel toe cap protects against impact from falling objects and against compression, giving 200 Joules of protection - equivalent to dropping 20kg from a height of 1m or a weight of 1.5 tonnes resting on the toe area Steel midsole - a thin yet strong steel plate that runs the length of the sole and protects against objects penetrating from below and piercing your foot, such as nails, tacks, glass shards and more, that could otherwise cause a potentially serious injury Ultra hardwearing PU/rubber sole that is resistant to fuel oil, so it won't degrade, stain or retain grease that would otherwise cause slips and trips Heavy duty scuff cap provides extra scuff/abrasion resistance around the high wear toe cap area, extending the boot's working life Other features include: energy absorbing heel that reduces foot fatigue; anti-static sole that minimises the build-up of electrostatic charges; slip resistant sole SIZING - Blackrock safety footwear is designed with a wide fitting to allow for thick boot socks to be worn. Please take this into account when choosing your size; you may wish to move down one UK/EUR size if wearing with regular socks Safety rating S3 WR SRC - Blackrock footwear is rigorously tested and certified by Intertek so you can rest assured it is legitimate and will keep you safe. Check the Declaration of Conformity in the image gallery, which includes the certificate number