The Georgia Boot Men's 8 in. Briar Brown Hammer Steel Lace-Up Boots are a safety boot that meets three ASTM standards! Beyond that, these men's work safety boots are also ultra-comfortable. Safety first: it comes with a steel toe and an ASTM-certified anti-impact internal met guard. These work safety boots meet ASTM standards for protective toe, electrical hazard and protective metatarsal, keeping you safe on the job. The rubber Hammer outsole on these safety toe work boots resists oils, chemicals, heat and abrasions, but also is cushioning and flexible. Georgia Boot's patented Comfort Core technology is a specially designed, polyurethane, energy-return heel plug that stores energy as it's compressed by your foot, then releases that energy as you lift your foot.