Timberland PRO Steel Toe Work Boots. The men's Timberland PRO Endurance Puncture Resistant Steel Toe Boot redefines comfort one layer at a time. Engineered specifically for those who spend several hours a day on their feet, this boot features built-in Anti-Fatigue Technology that absorbs shock and returns energy at key zones of the foot to deliver long-lasting, all-day comfort where you need it most. Imported.