Maximum protection with The world's first circular safety shoe - in a range of foot widths. The Alaska XXD offers remarkable levels of comfort thanks to a broad range of widths and bespoke sizing options. It's exactly the same as the standard Alaska - a safe, well protected shoe with a sturdy steel toe. The Alaska's Bob's XXD's 'sticky grip' nitrile rubber, Vibram designed sole is highly resistant to extreme temperatures and corrosive chemicals. With a broad variety of widths, you should forget you're wearing them, until the moment you're glad you are. The world's first ever circular safety shoe!