S3 Certification Fiber Glass Toe Storm Defender™ Rugged Flex® Scuff cap protects boots without adding weight Performance shank provides extra stability Lightweight 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. F702905 Detroit 8" S3 Waterproof High Boot Dark Brown