The Timberland Men's Flexshield Internal Met Guard 6 Inch Steel Toe Workboot have all-encompassing protection. Flexible. Lightweight. Breathable. Comfortable. And good looking to boot. Met Guard and FlexShield workboots from Timberland Pro have it all. Built to surpass the AS safety standard for impact, compression resistance and metatarsal impact. These boots are built for extreme conditions and will flat out exceed your standards.