The 5.11 A.T.A.C. 2.0 6” Shield Side Zip Boots deliver superior safety in the most unforgiving environments. These 5.11 boots feature a SlipStream™ waterproof/bloodborne pathogen-resistant membrane, an ASTM/CSA CARBON-TAC toe, and an ASTM/CSA puncture-resistant midsole board for critical protection. A full-length Ortholite® footbed works to keep your feet cool, dry, and comfortable, while Otholite® foam padding in the ankle holds the heel in place. Another addition to these safety toe boots is the Achilles heel flex zone, which gives a critical part of your foot more range of motion without compromising support and stability.