- Gently worn. (faint markings on tread and soles, see pics.) - Safety Work Boot with a padded, low cut scalloped collar for ease of movement, nitrile outsole (heat resistant to 300C, 200 joule safety steel toe cap and anti static properties. In Nubuck leather with Trisole comfort technology which has been specifically designed to cushion your feet, knees, hips, and lower back from day-to-day fatigue. Independently certified to meet International Safety Standards - American standard ASTM F2413.