Beyond a certified toecap, look for puncture-resistant midsoles (protection against nails or sharp objects), slip-resistant soles (grip on wet, oily or smooth surfaces), heat- and oil-resistant outsoles, electrical-hazard (EH) protection where needed, waterproof or water-resistant uppers, ankle support, and good cushioning for all-day comfort. Match the features to your site's hazards and your time on your feet.